Kalashtami, which is also known as Kala Ashtami, is experiential
every month during Ashtami Tithi of Krishna Paksha. Devotees of Lord Bhairav
keep fast and worship Him on all Kalashtami days in the year.
The most important Kalashtami, which is known as Kalabhairav
Jayanti, falls in the month of Margashirsha according to North Indian, Purnima
to Purnima, lunar month calendar while Kalabhairav Jayanti falls in the month
of Kartik in South Indian, Amavasya to Amavasya, lunar month calendar.
However
both calendars observe Kalabhairav Jayanti on the same day. It is believed that
Lord Shiva was appeared in form of Bhairav on the same day.
Kalabhairav Jayanti is also known as Bhairav Ashtami.