nisbook - January 2023
Today:
(jump to) Today's edits, Plates 113+
HTML template, and JavaScript &c. are courtesy of upstream sources:
Brad Nelson | Brad Nelson's SVFIG talks repository | reveal.js by Hakim El Hattab | impress.js by Bartek Szopka, Henrik Ingo | Valid HTML
Tue 18 Oct 17:07:27 UTC 2022 Rev 000ccp- ongoing_talk-aa-ao-
Mon 17 Oct 14:20:41 UTC 2022 Rev 000cco- ongoing_talk-aa-an-
Calendar-making
October 13, 2022
Calendar template - p.01
Setup spacing with a five-count pattern, 3 spaces left edge
abcxxxabxxxabxxxabxxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
Cue music: Hidden Treasure by Traffic
Keybindings: ESC, arrow keys
SPACE-bar slaps work, too (advance one frame, even from the thumbnail view).
Calendar template - p.02
Give days of the week once
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
commentary here if required.
Calendar template - p.03
Day One will be somewhere in the middle
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
commentary here if required.
Calendar template - p.04
Day One will be somewhere in the middle
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
A wrong guess on where '1' belongs is made on purpose, here. ;)
Calendar template - p.05
Populate days 1 thru 7
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
commentary here if required.
Calendar template - p.06
Populate days 1 thru 7
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
(Expanded, now, to another line.)
Calendar template - p.07
Add Day 8 below Day 1
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
xxx xxx xxx 8 xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
commentary here if required.
Calendar template - p.08
Carry out to day 14 there
Mon Tue Wed Thu Fri Sat Sun CW
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
xxx xxx xxx 8 9 10 11 12 13 14 xx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
Room was made for the 'CW' column to the right
Calendar template - p.09
Extend the line that has the 8th in it to the left as well.
Mon Tue Wed Thu Fri Sat Sun CW
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
4 5 6 7 8 9 10 11 12 13 14 xx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
Ran out of room on the left edge for the line that holds the 8th of the month.
Calendar template - p.10
Simplified here - yours can have the removed lines; that's fine:
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
4 5 6 7 8 9 10 11 12 13 14 xx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
commentary here if required.
Calendar template - p.11
Simplified here - yours can have the removed lines; that's fine:
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
4 5 6 7 8 9 10 11 12 13 14 xx
commentary here if required.
Calendar template - p.12
Label the 'CW' column
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
4 5 6 7 8 9 10 11 12 13 14 xx
commentary here if required.
Calendar template - p.13
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
4 5 6 7 8 9 10 11 12 13 14 xx
Right-shifted stuff: Move the bottom line one place to the right.
Calendar template - p.14
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
3 4 5 6 7 8 9 10 11 12 13 14 xx
Type in the 3rd of the month, lower row.
Calendar template - p.15
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
3 4 5 6 7 8 9 10 11 12 13 14 xx
Right-shifted stuff: Move the bottom line one place to the right.
Calendar template - p.16
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
Type in the 2nd of the month, lower row.
Calendar template - p.17
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
Right-shifted stuff: Move the top line one place to the right.
Calendar template - p.18
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
Keep Day 1 and Day 8 in the same column when right-shifting the text.
Calendar template - p.19
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
Right-shifted stuff: Move the CW in the xxx rule-line one place to the right.
Calendar template - p.20
Extend the line that holds the 8th of the month back to the 2nd of the month.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
Right-shifted stuff: Move the CW heading one more place to the right.
Calendar template - p.21
Add a line and type '9' and '10' there.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 xx
Re-use the '2, 9' vertical alignment to reproduce the sequence at the left, this time.
Calendar template - p.22
Complete the new line by typing in the numbers.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14..
Commentary if needed.
Calendar template - p.23
Complete the new line by typing in the numbers.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 <-- this
Make use of multiples of 7 to check alignment as you type.
Calendar template - p.24
Complete the new line by typing in the numbers.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14..
continuing..
Calendar template - p.25
Complete the new line by typing in the numbers.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18
Commentary if necessary.
Calendar template - p.26
Complete the new line by typing in the numbers.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
Last column will hold 'CW' ISO Current Week.
Calendar template - p.27
Spit out another line.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
Use existing work to model the new work as it's added in.
Calendar template - p.28
Generate another line.
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 31 xx
Carry out the line using whitespace, and place 'xx' at the end.
Calendar template - p.29
And one very short line:
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 31 xx
30 31 xx
Again, pad the last line using whitespace and placeholder 'xx' tacked onto the end.
Calendar template - p.30
Bring back days of the week:
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 31 xx
30 31 xx
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx
Extra copies of ruler lines shown for alignment.
Calendar template - p.31
Calendar template - p.02ka
MASSIVE skip of details, then:
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 xx
John Horton Conway's Domesday Rule says 6/6 is a Monday in 2022.
Calendar template - p.32
June 6, 2022 is a Monday.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx xxx xxx xxx xxx 1 2 3 4 5 6 7 xx
2 3 4 5 [6] 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 xx
John Horton Conway's Domesday Rule says 6/6 is a Monday in 2022.
Calendar template - p.33
Look for the 'window' boundary.
JUNE 2022
[Mon Tue Wed Thu Fri Sat Sun CW]
xxx xxx xxx xxx |xxx 1 2 3 4 5 6| 7 xx
2 3 4 5 | 6 7 8 9 10 11 12 13| 14 xx
9 10 11 12 | 13 14 15 16 17 18 19 20| 21 xx
16 17 18 19 | 20 21 22 23 24 25 26 27| 28 xx
23 24 25 26 | 27 28 29 30 | xx
Day of Week headers (Mon, Tue ..) mark a boundary for the
calendar.Calendar template - p.34
June 6, 2022 is a Monday.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 xx
6 7 8 9 10 11 12 13 14 xx
13 14 15 16 17 18 19 20 21 xx
20 21 22 23 24 25 26 27 28 xx
27 28 29 30 xx
Obliterate unused block on the left.
Calendar template - p.35
June 6, 2022 is a Monday.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 xx
6 7 8 9 10 11 12 13 14 xx
13 14 15 16 17 18 19 20 21 xx
20 21 22 23 24 25 26 27 28 xx
27 28 29 30 xx
This is the beginning of a virtual slide-rule window.Calendar template - p.36
ISO Week cheat - lookup elsewhere atm.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 xx
6 7 8 9 10 11 12 13 14 xx
13 14 15 16 17 18 19 20 21 xx
20 21 22 23 24 25 26 27 28 xx
27 28 29 30 xx
Thu 6 Jan 2022 in ISO Week #1.
Calendar template - p.37
ISO Week cheat - lookup elsewhere atm.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 xx
6 7 8 9 10 11 12 13 14 23
13 14 15 16 17 18 19 20 21 xx
20 21 22 23 24 25 26 27 28 xx
27 28 29 30 xx
Mon 6 June 2022 in ISO Week #23.
Calendar template - p.38
ISO Week cheat - lookup elsewhere atm.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 22
6 7 8 9 10 11 12 13 14 23
13 14 15 16 17 18 19 20 21 24
20 21 22 23 24 25 26 27 28 xx
27 28 29 30 xx
Fill in Weeks 22 and 24.
Calendar template - p.39
ISO Week cheat - lookup elsewhere atm.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
xxx 1 2 3 4 5 6 7 22
6 7 8 9 10 11 12 13 14 23
13 14 15 16 17 18 19 20 21 24
20 21 22 23 24 25 26 27 28 25
27 28 29 30 26
And the others.
Calendar template - p.40
ISO Week cheat - lookup elsewhere atm.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW|
xxx 1 2 3 4 5 6| 7 22
6 7 8 9 10 11 12 13| 14 23
13 14 15 16 17 18 19 20| 21 24
20 21 22 23 24 25 26 27| 28 25
27 28 29 30 | 26
And the others.
Calendar template - p.41
Finish the 'slide rule window' idea.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Keep Monday where it is but fix all else.
Calendar template - p.42
Use an old ruler line to realign back to the left.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Begin left-shifting lines, next frame.
Calendar template - p.43
Use an old ruler line to realign back to the left.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Shifted: one place to the left of where it was.
Calendar template - p.44
Continue to left-shift using ruler to guide.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx xxx xxx CW xxx xxx
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Shifted: one more place to the left.
Calendar template - p.45
Continue to left-shift using ruler to guide.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx xxx CW
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Use '7, 14, 21' and '1, 8, 15' as guides.
Calendar template - p.46
Continue to left-shift using ruler to guide.
xxx xxx xxx xxx xxx xxx xxx xxx CW
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
J in June aligned to T in Thu.
Calendar template - p.47
Continue to left-shift using ruler to guide.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx xxx CW
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
J in June aligned to T in Thu.
Calendar template - p.48
Continue to left-shift using ruler to guide.
JUNE 2022
xxx xxx xxx xxx xxx xxx xxx CW
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
J in June aligned to T in Thu.
Calendar template - p.49
Continue to left-shift using ruler to guide.
JUNE 2022
Mon Tue Wed Thu Fri Sat Sun CW
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
That's all there is, to it.
Calendar template - p.50
What happened?
- A very wide universal calendar, with repeats, was templated.
- A virtual slide-rule window is used to choose which consecutive columns to display.
What happened?
BEFORE slide-rule window:
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 31 xx
30 31 xx
BEFORE slide-rule window:
Mon Tue Wed Thu Fri Sat Sun
xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx CW
1 2 3 4 5 6 7 xx
2 3 4 5 6 7 8 9 10 11 12 13 14 xx
9 10 11 12 13 14 15 16 17 18 19 20 21 xx
16 17 18 19 20 21 22 23 24 25 26 27 28 xx
23 24 25 26 27 28 29 30 31 xx
30 31 xx
AFTER slide-rule window:
Mon Tue Wed Thu Fri Sat Sun CW JUNE 2022
1 2 3 4 5 22
6 7 8 9 10 11 12 23
13 14 15 16 17 18 19 24
20 21 22 23 24 25 26 25
27 28 29 30 26
Conway's Domesday Rule
4/4, 6/6, 8/8, 10/10 and 12/12 all fall on a Monday in 2022.
5/9, 9/5, 7/11 and 11/7 also fall on a Monday in 2022.
For January, it's the 3rd.
For February and March, use the fictional 'March 0' day
(the last day of February).
_
_
_
_
_
Conway's Domesday Rule
4/4, 6/6, 8/8, 10/10 and 12/12 all fall on a Monday in 2022.
5/9, 9/5, 7/11 and 11/7 also fall on a Monday in 2022.
For January, it's the 3rd.
For February and March, use the fictional 'March 0' day
(the last day of February).
January 3rd, February 28th, March 7th,
April 4th, May 9th, June 6th, July 11th,
August 8th, September 5th, October 10th,
November 7th and December 12th.
Conway's Domesday Rule
The Domesday Rule is used for quick checks, to make sure the
calendar represents the month as intended.
The usual thing to do is to learn what day April 4th falls on,
for the new year coming, and memorize it in late December or
in early January of each year you are currently .. in.
January 3rd, February 28th, March 7th,
April 4th, May 9th, June 6th, July 11th,
August 8th, September 5th, October 10th,
November 7th and December 12th.
Domesdays for Future Years
Every decade or so, you can make a quick list of them - of
the day of the week, for each year, where all these dates
land on for that year.
A year is a day
The first day of the year (New Year's Day in some locales)
falls on the next day of the week, from the previous year's
January 1st, for the most part.
January 2018
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
January 2019
Su Mo Tu We Th Fr Sa
1 2 3 4 5
Domesdays for Future Years
A year is a day
The first day of the year (New Year's Day in some locales)
falls on the next day of the week, from the previous year's
January 1st, for the most part.
January 2018
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
January 2019
Su Mo Tu We Th Fr Sa
1 2 3 4 5
January 2020 - a leap year
Su Mo Tu We Th Fr Sa
1 2 3 4
Domesdays for Future Years
January 2018
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
January 2019
Su Mo Tu We Th Fr Sa
1 2 3 4 5
January 2020 - a leap year
Su Mo Tu We Th Fr Sa
1 2 3 4
January 2021
Su Mo Tu We Th Fr Sa
1 2
January 2022
Su Mo Tu We Th Fr Sa
1
Domesdays for Future Years
A year is a day
2016 mon
2017 tue
2018 wed
2019 thu
fri
2020 sat
2021 sun
2022 mon
2023 tue
wed
2024 thu
2025 fri
2026 sat
2027 sun
mon
2028 tue
2029 wed
Domesdays for Future Years
A year is a day
2021 sun
2022 mon
2023 tue
2024 thu
2025 fri
2026 sat
For practical purposes, this list can be kept in a permanent date book (journal) for reference. It's the only hard part to remember. And it can be calculated, as needed.
What else?
Length of the Months
Count on your knuckles, in this pattern:
High, low, high, low, high, low,
High, high,
low, high, low, high
_
_
_
Length of the Months
Count on your knuckles, in this pattern:
High, low, high, low, high, low,
High, high,
low, high, low, high
Jan, Feb, Mar, Apr, May, Jun,
Jul, Aug,
Sep, Oct, Nov, Dec
Length of the Months
Count on your knuckles, in this pattern:
High, low, high, low, high, low,
High, high,
low, high, low, high
Jan 31, Feb 28, Mar 31, Apr 30, May 31, Jun 30,
Jul 31, Aug 31,
Sep 30, Oct 31, Nov 30, Dec 31
And?
Domesday Algorithm
John Horton Conway came up with his Domesday Algorithm, that puts this all together.
Domesday Algorithm
Conway's Domesday Algorithm is, essentially, a bar bet winner. It allows you to simply think about it, and come up with the day of the week, correctly, for any date in history.
While sitting on a barstool.
Domesday Algorithm
Personally .. it was fun to learn it, and to put it to use, for a few years. Quite useful. When it's needed, nobody has to explain its value.
Domesday Algorithm
But now .. like learning the Dvorak keyboard layout, and putting it to use for a few years .. it's just not a thing to continue with, indefinitely.
Domesday Algorithm
so here you go .. the Domesday Rule article on Wikipedia.
See also:
for everyday use?
Learning what day April 4th falls on, for the coming year, late during the current year seems to be a win.
Marking it on next year's calendar (as soon as it arrives) is a great idea.
You can do any month that makes sense to you; April 4th is the first of them that has the identical Month/Day pattern (4/4, 6/6, 8/8 ..) after deciphering the early months of the year (Jan Feb Mar).
Forgot to say
January: 3 in 3 years, 4 in the 4th year
January 3rd in most years also falls on the Domesday for that year.
The usual mnemonic for January: 3 in 3 years; 4 in the 4th year.
This '4th' year is (of course) the leap year.
If it's a national election year (USA-centric view here) it's also a leap year.
So: January 4, 2020; January 4, 2024; January 4, 2028 will all match up with
4/4, 6/6 and 8/8 of each of those years.
March the Zeroth
Is there a March 0?
Not really. But!
It is a useful fiction, and follows from what-is.
March 0 is simply the fictional name of a day that always falls on
the day before March the 1st.
After working with calendars for many years, it's obvious that the
1st and 8th of the month fall on the same day of the week.
Similarly, the 0th and the 7th also fall on their own same day of
a week.
March the Zeroth
March 2022
Su Mo Tu We Th Fr Sa
0 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31 32
Here, two fictional dates are added to the correct calendar
for March of 2022. March 0 is the day before March 1st.
March 32nd is the day after March 31st.
(No use has been found for a fictional March 32nd, in as far as
studies were pursued .. someone else could know an application.)
March the Zeroth
March 0 (the last day of February) also falls on the Domesday for that year.
February, in a leap year, is known as 'bissextile' because there are two sixes.
Two whats? Two sixes. Really? Yes.
The Romans.
So what's up with
what the Romans do?
Them Romans counts their dates from backwards.
The Ides, the Nones and the Calends.
Those are the calendar intercepts in the Roman system. Maybe one more.
The Ides was the 15th, or close to it. Nones were a 9th day, and the
Calends was the last day of the month (or the first day of the next
month .. something like that).
.. two sixes, then?
Assuredly. The 6th day before the Calends was repeated, or something like that, for the Romans to add an intercalation day on a leap year. Or something.. yeah, that thing. Something like that. So: bissextile.
The Backstory
I had a Casio.
I had a Casio Digital Diary - yikes, a long time ago, now. It had a pretty nice calendar system, including calculation of the difference between two dates.
No, that's not it. It was earlier.
I was nineteen, living in a skid row hotel in Florida. One of my older friends there was interested in calculation of people's exact age, to the day. Being just one day off was not good enough for this guy.
He was a sea-captain; a Captain in the U.S. Coast Guard, back in his day.
That's probably the beginning of the interest in the subject. The Digital Diary just .. taunted me with how easily it solved Dimitri's problem (his name was Dimitri).
- fin -
UNRELATED matters follow.
ThirdSecond plate - p.04
/*
* RUN-TIME FUNCTIONS FOR DEFINED WORDS
*/
void Fdocon (void * pfa) {
*--psp = *(unsigned int *)pfa;
}
void Fdovar (void * pfa) {
*--psp = *(unsigned int *)pfa; /* pf holds variable address */
}
void Fdorom (void * pfa) {
*--psp = (unsigned int)pfa;
}
placeholder late late
This one's just pathetic.
hello
void setup() {
Serial.begin(9600);
pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
bool state = digitalRead(LED_BUILTIN);
state = !state;
digitalWrite(LED_BUILTIN, state);
delay(300);
}
This is an H3 heading
- Got some cool bullet points to show you
- But not just yettt. Tuesday 18 October 2022, 17:07:27 UTC
The H1 is really big
Here is the use of a PRE tag for you - wa1tnr - p.09
0 000 0 10 000 s 8 1100 000 d 16
0 001 r 1 10 001 m 9 1100 001 v 17
tiny header
Thu 13 October 2022
Plate 90
<-- .PNG loads
Thu 13 October 2022
Plate 91
High-Z GPIO pin state
of a GPIO pin.
The code for this talk is stored on Arduino's github: wiring_digital.c#L29-L59
Plate 92
Thu 13 October 2022
github pinMode() code link
Plate 93
Thu 13 October 2022
arduino-1.8.19/hardware/arduino/ \
avr/cores/arduino/wiring_digital.c
Plate 94
zoomed:
Plate 95
arduino-1.8.19/hardware/arduino/ \
avr/cores/arduino/wiring_digital.c
Plate 96
This talk was meant to be a discussion of pinMode() and how
closely it corresponds to the avr hardware.
There's a section of the avr datasheet that is directly
relevant.
The talk was meant to show those correspondences, to help
model what's going on when pinMode() is called.
Essentially, it's setting registers.
kinda ran out of time for this talk's preparations. ;)
Plate 97
non sequitur alert
tex
Plate 99
Fri 14 October 2022
Plate 100 - century!
Plate 101
Plate 102
Saturday 15 Oct 2022
Plate 103
Mars Eat Oats
Space exploration Mars Elon Musk
- Human mission to Mars
- Orbit wanted Newton's Cannonball, but crashes browser
- Delta-V
- Trains in space
- Mars cycler Buzz Aldrin's discovery
- Free-return trajectory Earth-Mars
- PDF: On-Orbit Staging Link no. 11 of Human Mission to Mars page on Wikipedia
- Earth
- Terraforming
- Holocene interglacial (ended) cite?
Plate 104
Sunday 16 Oct 2022
IT SEEMS like there will be 'station-keeping' alike fuel burns for most of these (see previous plate) proposed schemes**. Maintenance fuel burns to tune the orbits more precisely than ballistic trajectories alone can provide for.
Parallel launches - perhaps nine to twenty-seven hours apart - could provide for required mission redundancies. If something happens to a cycler ship, there's another one coming along in another nine hours. That kind of thing.
________
** Aldrin cycler, free-return trajectory, &c.
Plate 105
Conceivably, the cycler ships could be robotically staffed and
maintained, greatly reducing human risk during spaceflight, for
total mission profile.
Perhaps existence of cyclers instigates opportune science experiments unique to that environment, returning value that is (at least somewhat) orthogonal to primary mission goals. Could be something as fundamental as study of long- duration human spaceflight.
Paying for 'all this' from gains made by
'mining' stable-orbit bodies (moons, &c.) 'near' to Mars
(as an example of nearby assets newly 'acquired' by virtue of
their closeness to Mars, having already achieved 'stable
transportation' there).
Plate 106
Draw a really big circle around each transfer point (where speed changed quite a bit). So you've landed on Mars, you've collected 5 tons of rocks to ship back home. You have to get going again. Outside the really big circle, you are traveling at max speed, to make the trip back home a reasonably short one. That's your delta-v - change in velocity. Of all that rock.
Every mile per hour of increased transit speed required new
energy input to make it happen. Braking (when you arrive) takes
a similar amount of energy.
Plate 107
The problem happens inside the really big circle. Somehow, rock that was 'standing still' is set in motion, some number n miles per hour by the time it's gotten fully going again (outside the circle).
n is an impressively large number.
It really doesn't matter (at all) if the fly-by cycler ship goes whizzing past. You gotta catch up to it!
Aldrin's taxi has a hidden assumption: the things in the taxi do not weigh very much (people and their luggage; and modest payloads, such as the equipment they'll need).
They're self-loading freight, as the transport
pilot's joke goes. ;)
Plate 108
So lets say you burned all your taxi's fuel, just to match speeds with the cycler ship. You just 'step over to it' (your speeds are identical). Your taxi is now a ballistic object, moving through space at the same exact speed as the cycler ship.
But it has no fuel at all, to change that situation. Not yet, anyway.
So you get you a fat taxi - one capable of matching the cycler ship's speed, dropping you off, and returning to base (to Mars). It's got the juice to do that much. Great!
And when you get home, a taxi is there to meet you. Same deal.
Plate 109
One nice thing is: the taxis can be pre-staged for pickup duties (no strong time constraint, when they arrive empty, match the cycler's speed, and just wait for a passenger (or small cargo) to bring back to Earth. taxi rides bringing new arrivals from a cycler ship, down to the surface of Mars. They could ride for a century, docked with the cycler ship, with no great concerns about that to be resolved.
Nice.
Plate 110
Monday 17 Oct 2022
Plate 111
Regrettably, the entire orbital edits effort got out of hand. Not my wheelhouse. Just an armchair consumer of 'related' information.
Oops.
There were a few useful YouTube hits on 'Aldrin Cycler' to take
in.
Plate 112
Tuesday 18 Oct 2022
Plate 113
David Farragut 1801-1870
Farragut - on WikipediaFarragut - on Project Gutenberg
Plate 114
David Farragut 1801-1870
"When the day arrived for our separation from the squadron," writes Farragut in his journal, "the captain was furious, and very plainly intimated to me that I would 'find myself off New Zealand in the morning,' to which I most decidedly demurred. We were lying still, while the other ships were fast disappearing from view, the commodore going north and the Essex Junior, with her convoy, steering to the south for Valparaiso.
Plate 115
David Farragut 1801-1870
He replied that he would shoot any man who dared to touch a rope without his orders; he 'would go his own course, and had no idea of trusting himself with a d—d nutshell'; and then he went below for his pistols.
I called my right-hand man of the crew and told him my situation. I also informed him that I wanted the maintopsail filled. He answered with a clear 'Ay, ay, sir!' in a manner which was not to be misunderstood, and my confidence was perfectly restored.
Plate 116
David Farragut 1801-1870
I made my report to Captain Downes (of the Essex Junior), on rejoining him; and the captain also told his story, in which he endeavored to pursuade Downes that he only tried to frighten me. I replied by requesting Captain Downes to ask him how he succeeded; and to show him that I did not fear him, I offered to go back and proceed with him to Valparaiso.
He was informed that I was in command, he being simply my adviser in navigating the vessel in case of separation. So, this being settled and understood, I returned to the Barclay, and everything went on amicably up to our arrival in Valparaiso."
Plate 117
Plate 118
misc - see elsewhere (private)Plate 119
placeholderPlate 120
placeholder Some content here
Plate 121
small heading
That's pretty much it. ;)
-wa1tnr, October 2022
Valid HTML | source repository, thisfile.
Rev 000ccp- ongoing_talk-aa-ao-
Tue 18 Oct 17:07:27 UTC 2022