Question

A festival in a purely lunar calendar falls on 20 May this year. Taking a lunar year as 354 days and the solar year as 365 days, on about which date will it fall next year?

Assertion (A): A year in a purely lunar calendar is about 11 days shorter than a solar year. Reason (R): Twelve lunar months of about 29.5 days each add up to about 354 days.

A purely lunar year has 354 days and a solar year has 365 days. By how many days will the lunar calendar fall behind the seasons in 3 years?

Aman's family follows three calendars. At school they use the Gregorian calendar, a solar calendar. His friend Zoya's family uses the Hijri calendar, which has 12 lunar months making about 354 days, with no extra month. Aman's grandmother uses a traditional Indian calendar whose months follow the Moon but which adds an extra month now and then. Zoya says that the month of Ramzan has come in summer, in the rains and in winter during her lifetime, while Aman notes that Diwali always falls in October or November.