"Eric" wrote in message ...
Today is 16 Mar, 2007 (Friday), does anyone know which historical year will
offer 16 Mar on Friday? On the other words, which historical year will offer
the same weekday on 2007 for everyday?
Thank for any suggestions
Eric

Hi Eric.

An easy general way to get the same weekday,
and weeknumbers american and ISO,
is to add 400 years to the date.
400 years is 20871 weeks, counting the various leap days,
and then the calendar repeats itself, if you don't consider easter.

So 16 Mar 1607 was also a Friday, if your calendar was gregorian then.

Excel has a discrepancy 1/1/1900 and 60 days forward,
1/1/1900 weekday isn't 1/1/2300 weekday in Excel, but it should be.
The 1/1/2300 ... weekdays are the correct ones.

Hope that was useful, Hans.