Thursday, August 24, 2023

Recycle calendars


Recycle calendars · Or Don't Recycle Them, After All · No leap years on Mondays between 1872 and 1912?

For 2024, weekdays and dates will match up as in 1968.

It's leap years, and that means there are two Dominical letters.

It's beginning on Monday, meaning Monday is starting it as A, this mean G starts out as letter for Sundays "throughout the year" except it only lasts to February in leap years.

As February has 29 days, but March 1st is still same Dominical letter as February 1st, namely D, this means D is one day later in March than in February, namely ... first Thursday, then Friday

G A B C D ...
Su Mo Tu We Th ...
Mo Tu We Th Fr ...


However, this means, the Sunday letter for the rest of the year is moved back one date / Dominical letter:

F G A B C D ...
Sa Su Mo Tu We Th ...
Su Mo Tu We Th Fr ...


Meaning, the rest of the year is having F as the letter for Sundays. I'm sorry (but not too sorry) for being unconventional, one would say Dominical letter changing from G to F, but since all of the A through G times 52 + a single A is also called Dominical letters, one can equally say it's the letter for Sundays that changes.

So, unused unsold calendars from 1968 could be a gift for 2024 .../HGL