These pages cover lots of interesting information about calendars, and Easter dating.

• Find out about the interesting history of the calendar as it was shaped by political leaders and a quest for greater accuracy. A chart shows how calendar changes and Easter dating methods are related.
• How is Easter date worked out? Read about the different Easter dating methods, and the myths about how Easter is NOT calculated!
• When is Easter? Go to this page if you just want to know when an Easter date is.
• Information about Easter Dates This page answers some common questions, such as "How often are Western and Orthodox Easters on the same date?".
• Looking for algorithms to calculate Easter dates? This page contains algorithms for most popular programming languages.
• Need to find a day of the week for any date? Here's a perpetual calendar - no calculation is required!