The personal web site of Rick Koshko (married name Rick Wiegmann Koshko).
To email me, click here for the email form.
I currently use these social networks: LinkedIn, Twitter, Facebook.
My compendium of links to useful, interesting, and cool web sites.



Day-of-the-week formula
Day-of-week calculator
Possible dates for day, month, and year
Possible months for a day, date, and year
Possible years for a day, month, and date
Days between dates
Easter date calculator
400-year perpetual calendar
Gregorian Calendar Lookup
Julian Day number calculator

To contact me
Click here for the email form.


Day-of-the-Week JavaScript Form

This is the JavaScript manifestation of the Day-of-the-Week Formula from the 1984 Teacher Brothers Almanac. Test it with a few dates you know to make sure it works in your browser before relying on it. It works in the ones I use.

Note: this works for Gregorian dates only.