Dionysian 95-Year Extension Exercise

Generate a 95-year Dionysian table, then extend it by another 95 years.

Astronomical year 0 = 1 BC; year −1 = 2 BC. Allowed range: -1,000,000 to 1,000,000.

Extension rules for bissextile years

1Choose Luna XIV date Copy the Luna XIV date from the source year to the target year.
2Choose Luna XIV weekday Move the Luna XIV weekday one day earlier.
3Choose Easter Sunday date A) If the source Luna XIV is Monday through Saturday, move the Easter Sunday date one calendar day later.
B) If the source Luna XIV is Sunday, move the Easter Sunday date six calendar days earlier.

Source table and extension exercise

• A common source year requires no correction. Copy the Luna XIV date, the Luna XIV weekday, and the Easter Sunday from the source year to the target year unchanged.
• A bissextile source year requires correction. Use the extension rules for bissextile years.
# Source table Exercise table 95 years later
Source year Year type Luna XIV date Luna XIV weekday Easter Sunday Target year Luna XIV date Luna XIV weekday Easter Sunday Result and rule feedback
The source table and answer key are calculated from Dionysius’s Alexandrian 19-year lunar cycle and the Julian weekday cycle. For AD 532–626 they reproduce the Luna XIV and Easter Sunday in Dionysius’s historical table; for other years they extend the same Dionysian rules proleptically.
Inspired by Ulrich Voigt's analysis of the sequence 95 95 95 247.
Made by Preben Nørager and GPT-5.6 Thinking.