Samvat is any of the various
Hindu calendars. In India, there are several
calendars in use. The Saka Samvat is associated
with 78 A.D; Gupta Samvat with 320 A.D; and
Hijri Samvat with 622 A.D. The first ear of Hijri
era was the Islamic year beginning in AL 622
during which the emigration of Muhammad
from Mecca to Medina, known as the Hijra,
occurred. The Gregorian calendar, also called
the Western calendar and the Christian calendar,
is the internationally accepted civil calendar. It
was introduced by Pope Grery XIII, after whom
the calendar was named, by decree signed on 24
February, 1582.