There are only 14 different possible calendars (7 possible days of the week for January 1st, times 2 for leap year or not). This isn't anything special.
Born in 1953, so been there, done that.
... and the 1997 one.
The calendar repeats every 28 years (give or take the hiccough about leap years and years divisible by 100 but not 400)
There are only 14 different possible calendars (7 possible days of the week for January 1st, times 2 for leap year or not). This isn't anything special.