from
The Collaborative International Dictionary of English v.0.48
Hindoo calendar \Hin"doo calendar\ or Hindu calendar \Hindu
calendar\ .
A lunisolar calendar of India, according to which the year is
divided into twelve months, with an extra month inserted
after every month in which two new moons occur (once in three
years).
Note: The intercalary month has the name of the one which
precedes it. The year usually commences about April 11.
The months are follows: Baisakh . . . . . . . . . .
April-May Jeth . . . . . . . . . . . . . May-June Asarh
. . . . . . . . . . . . June-July Sawan (Sarawan) . . .
. . . . July-Aug. Bhadon . . . . . . . . . . .
Aug.-Sept. Asin (Kuar). . . . . . . . . . Sept.-Oct.
Katik (Kartik) . . . . . . . . Oct.-Nov. Aghan . . . .
. . . . . . . . Nov.-Dec. Pus . . . . . . . . . . . . .
Dec.-Jan. Magh . . . . . . . . . . . . . Jan.-Feb.
Phagun (Phalgun) . . . . . . . Feb.-March Chait . . . .
. . . . . . . . March-April
[Webster 1913 Suppl.] Hindooism