Day of Week Calculator
Here is a very handy Day of Week Calculator, brought to you by PhilatelyAndPostalHistory.comi. If you're wondering on what day of the week a letter was posted, or if you are working on a piece of postal research, and need to know if a letter was written on a Sunday, then here's just the tool you need. Our Day of Week Calculator will tell you on what day
of the week any date fell (or will fall). We handle both
Julian and Gregorian dates. See the note at the bottom of
this page for more details. Please enter the date for which you wish to know the day of the week:
Is this date: British Julian Gregorian Press this button to find out which day of the week this was: We are considering making this tool available as a
desktop application, which you could download onto your
PC and use whenever you want to, even when not connected
to the Internet. If you might be interested in such a
tool, please tell us, through the feedback page. Julian and Gregorian CalendarsThe Julian calendar was in general use from 45 BC, but days of the week were not fixed in their curent form until MUCH later. The Gregorian calendar started replacing the Julian
calendar at different times in different places.France,
Italy, Spain and Luxembourg started using the Gregorian
calendar on 17th October 1582. Take care when working with dates of this era, to ensure that the correct calendar is used. There is a discrepancy of 10 days between 1582 and 1700, and 11 days in the 18th Century. The "British Date" option
automatically works out which calendar to use for a
British Date, based on the 1752 switch-over. |