Kalashtami is the Krishna-paksha Ashtami (8th tithi of the waning fortnight) of every lunar month, sacred to Kaal Bhairav — the fierce form of Shiva who governs time. The Margashirsha Kalashtami is Kalabhairav Jayanti, his appearance day. Dates below are computed for New Delhi.
| Date | Day | Name | Paksha / Month | Tithi Begins | Tithi Ends |
|---|---|---|---|---|---|
| 21 Jan 2025 | Tue | Kalashtami (Magha) | Krishna · Pausha | 20 Jan, 9:59 AM | 21 Jan, 12:40 PM |
| 20 Feb 2025 | Thu | Kalashtami (Phalguna) | Krishna · Magha | 19 Feb, 7:32 AM | 20 Feb, 9:58 AM |
| 22 Mar 2025 | Sat | Kalashtami (Chaitra) | Krishna · Phalguna | 22 Mar, 4:24 AM | 23 Mar, 5:23 AM |
| 20 Apr 2025 | Sun | Kalashtami (Vaishakha) | Krishna · Chaitra | 19 Apr, 6:22 PM | 20 Apr, 7:1 PM |
| 20 May 2025 | Tue | Kalashtami (Jyeshtha) | Krishna · Vaishakha | 19 May, 6:12 AM | 20 May, 5:52 AM |
| 18 Jun 2025 | Wed | Kalashtami (Ashadha) | Krishna · Jyeshtha | 17 Jun, 2:47 PM | 18 Jun, 1:35 PM |
| 17 Jul 2025 | Thu | Kalashtami (Shravana) | Krishna · Ashadha | 16 Jul, 9:2 PM | 17 Jul, 7:9 PM |
| 16 Aug 2025 | Sat | Kalashtami (Bhadrapada) | Krishna · Shravana | 15 Aug, 11:50 PM | 16 Aug, 9:35 PM |
| 14 Sept 2025 | Sun | Kalashtami (Ashwina) | Krishna · Bhadrapada | 15 Aug, 11:50 PM | 15 Sept, 3:6 AM |
| 13 Oct 2025 | Mon | Kalashtami (Kartika) | Krishna · Ashwina | 12 Oct, 2:17 PM | 13 Oct, 12:24 PM |
| 12 Nov 2025 | Wed | Kalabhairav Jayanti | Krishna · Kartika | 11 Nov, 11:8 PM | 12 Nov, 10:58 PM |
| 11 Dec 2025 | Thu | Kalashtami (Pausha) | Krishna · Margashirsha | 10 Dec, 1:47 PM | 11 Dec, 1:57 PM |
All dates & times computed for New Delhi (IST) with the Swiss Ephemeris + Lahiri ayanamsa — not copied.
Kalashtami is the monthly night of Kaal Bhairav, kept on the waning-fortnight Ashtami. Bhairav is worshipped as the remover of fear, the punisher of wrongdoing and the master of time; his vrat is traditionally kept for protection, discipline and relief from Rahu- and Shani-related afflictions.
The worship is done in the evening or night — a mustard-oil lamp, black sesame, and the Kalabhairav Ashtakam of Adi Shankaracharya are its heart. Feeding dogs, Bhairav's companions, is considered especially meritorious on this day.
There are 12 Kalashtami in 2025 for the Delhi region — one each lunar month on the Krishna Ashtami, including Kalabhairav Jayanti in Margashirsha.
Kaal Bhairav is the fierce manifestation of Shiva, the lord of time (kaal) and the guardian (kshetrapal) of sacred places — famously of Kashi, where he is the city's kotwal.
The Kalashtami of Margashirsha (November–December) is observed as Kalabhairav Jayanti, the day of Bhairav's manifestation.
Devotees fast, worship Bhairav at night with mustard-oil lamps, recite the Kalabhairav Ashtakam, and feed dogs — his vahana. Practice varies by tradition.
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