I logged that October 5-14, 1582, unaccounted-for gap as a bug against Windows. (SQL Server gets the weekday via a WinAPI call.)

I was told that this will be “soon” corrected for the cultures (languages) that were on the Roman calendar at that time. Win guys are not exactly sure what to do about countries that converted later; most notably Russian Orthodoxy, which converted only after the October Revolution of 1917. (What do you do if the date and time are marked as GMT but the culture is one of the Eastern Orthodoxies? Any suggestions for precedence of calculation?)

This goes all the way back to The Bard and his oft-quoted “time is out of joint,” which alluded to the fact that when he wrote Hamlet, the English calendar was out of sync with the Roman one.

I guess this means that someone will have to think through comparisons of dates on servers that are set to different cultures. (The mentioned October Revolution, which was logged on October 25, 1917, is now celebrated on November 7.)

Never a dull moment.