Intuitively: Every seven years. Remembering leap years: In 28 years, tops.
Thinking about it: Has to be more often than that; there are only seven weekdays the year can begin on.
This is only considering getting the weekday for every date right; moon-phase stuff like the date of Easter will make it (much?) more rarely.
OK, will go read the article now...
netsharc•5mo ago
I guess there are only 14 variations: 7 for every weekday, times 2 for leap year or no leap year.
KaseKun•5mo ago
This is ever so clever! When is your IPO?
porridgeraisin•5mo ago
The next time the calendar repeats.
hdjrudni•5mo ago
So 2031?
thomassmith65•5mo ago
I have nothing to do with this website.
The reason I chanced upon the site is because I thought a vintage calendar would make a nice gift for a friend of mine.
I then posted it to HN because I found it interesting.
rejectedstone•5mo ago
I think this is great and also applies to some planners. I suspect there would be issues with Holidays listed on the calendar that aren't based on set days (Easter, Jewish/Islamic Holidays, Chinese New Year, Holi, etc.).
CRConrad•5mo ago
Thinking about it: Has to be more often than that; there are only seven weekdays the year can begin on.
This is only considering getting the weekday for every date right; moon-phase stuff like the date of Easter will make it (much?) more rarely.
OK, will go read the article now...
netsharc•5mo ago