Ruling · Aśūnya Śayana Vrata (Āṣāḍha) · 2026

Friday 31 July

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 101 minutes.

Decide it for

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two moonrises

One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.

Moonrise of Thursday 30 July

Dvitīyā does not hold at moonrise. Not taken.

19:50 moonrise
18:3819:0219:2619:5020:1420:3821:02

Absent at moonrise

Moonrise of Friday 31 July

Taken. The only moonrise Dvitīyā holds at.

20:24 moonrise
19:1219:3620:0020:2420:4821:1221:36

Holds at moonrise

Dvitīyā presentMoonrise, the instant the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 21:31 on Thu 30 Jul to 22:32 on Fri 31 Jul.

    2026-07-30T16:00:49Z → 2026-07-31T17:02:12Z

  2. 02

    Kāla

    Moonrise is at 19:50 on the 30th and 20:24 on the 31st.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Dvitīyā must be current at moonrise. It is not on the 30th and is on the 31st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one moonrise qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 6048 s

  5. 05

    Ruling

    Aśūnya Śayana Vrata (Āṣāḍha), Ujjain, 2026: Friday 31 July.

    confidence: determinate

Say it like this

In Ujjain, Aśūnya Śayana Vrata (Āṣāḍha) 2026 falls on Friday 31 July. Dvitīyā runs from 21:31 on Thu 30 Jul to 22:32 on Fri 31 Jul and is current at moonrise that day.

ahargana.org/ujjain/festivals/2026/ashunya-shayana-vrata-ashadha · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 31 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 31 Jul
compat-drikpanchangComparison profileFri 31 Jul
No institution has a recorded ruling for Ujjain.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/ashunya-shayana-vrata-ashadha · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Kṛṣṇa · Dvitīyā
Kāla
Moonrise
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102. In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvitīyāMoonrise 30thCoveredMoonrise 31stCoveredRuled
Los Angeles09:01 → 10:0220:49holds21:16no30 Jul
Chicago11:01 → 12:0220:57holds21:19no30 Jul
Jersey City12:01 → 13:0221:00holds21:22no30 Jul
Port of Spain12:01 → 13:0219:28holds20:07no30 Jul
London17:01 → 18:0221:25holds21:38no30 Jul
Durban18:01 → 19:0218:17holds19:14no30 Jul
Dubai20:01 → 21:0219:47no20:20holds31 Jul
Delhi21:31 → 22:3219:52no20:23holds31 Jul
Kolkata21:31 → 22:3218:58no19:32holds31 Jul
Singapore00:01 → 01:0219:56no20:40holds31 Jul
Sydney02:01 → 03:0217:49no18:50holds31 Jul
Suva04:01 → 05:0218:22no19:14holds31 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ashunya-shayana-vrata-ashadha@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s