You are here
Project
Collect Gregorian calendars for the last five years. For each year, list the dates of Eid-ul-Fitr and Diwali in a table. Notice that Eid-ul-Fitr moves earlier by about 11 days each year. Check whether Diwali follows a steady pattern or has sudden jumps, and guess which year may have included an intercalary month (Adhikamaasa).
Show sample answer
Key Points
Eid drifts steadily; Diwali jumps when a month is added.
Key Points / Good Practices
- Tabulate Eid-ul-Fitr and Diwali dates for five years.
- Eid follows a purely lunar calendar, so it moves about 11 days earlier yearly.
- Diwali follows a luni-solar calendar, so it stays near the same season.
- A sudden jump in Diwali's date signals an added month.
- That added month is the intercalary month (Adhikamaasa).
- Confirm using a luni-solar calendar for that year.
Eid drifts steadily earlier while Diwali jumps in the year an Adhikamaasa is inserted.
