Hindu calendar

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The lunisolar calendar governing Hindu religious life and almost all Indian festivals and dating in its classic form from the fourth century AD. The solar year is divided into 12 lunar months in accordance with the successive entrances of the sun into the signs of the zodiac, the months varying in length from 29 to 32 days.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the lunisolar calendar governing the religious life of Hindus; an extra month is inserted after every month in which there are two new moons (once every three years)