Ruling · Bahulā Caturthī · 1908

Saturday 15 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 231 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two late afternoons

One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.

Late afternoon of Friday 14 August

Caturthī is absent from sāyāhna. Not taken.

16:01 sāyāhna beginssunset 18:53
15:3716:0116:2516:4917:1317:3718:0118:2518:4919:13

0 of 171 minutes covered

Late afternoon of Saturday 15 August

Taken. The only late afternoon Caturthī reaches.

16:00 sāyāhna beginssunset 18:51
15:3616:0016:2416:4817:1217:3618:0018:2418:4819:12

171 of 171 minutes covered

Caturthī presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 01:46 on Sat 15 Aug to 22:42 on Sat 15 Aug.

    1908-08-14T17:45:59Z → 1908-08-15T14:42:25Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:01–18:53 on the 14th, 16:00–18:51 on the 15th.

    sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 0 of 171 minutes on the 14th and 171 of 171 on the 15th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one late afternoon qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 13888 s

  5. 05

    Ruling

    Bahulā Caturthī, Daqing, 1908: Saturday 15 August.

    confidence: determinate

Say it like this

In Daqing, Bahulā Caturthī 1908 falls on Saturday 15 August. Caturthī runs from 01:46 on Sat 15 Aug to 22:42 on Sat 15 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/daqing/festivals/1908/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 15 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 15 Aug
compat-drikpanchangComparison profileSat 15 Aug
No institution has a recorded ruling for Daqing.

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

The rule, as data

/rules/bahula-chaturthi · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturthī
Kāla
Sāyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīSāyāhna 14thCoveredSāyāhna 15thCoveredRuled
Los Angeles09:46 → 06:4215:59161 min15:590 min14 Aug
Chicago11:46 → 08:4216:05167 min16:040 min14 Aug
Jersey City12:46 → 09:4216:10166 min16:090 min14 Aug
Port of Spain13:46 → 10:4215:55150 min15:550 min14 Aug
London17:46 → 14:4216:2999 min16:280 min14 Aug
Durban19:46 → 16:4215:180 min15:1984 min15 Aug
Dubai21:27 → 18:2315:590 min15:58145 min15 Aug
Delhi23:16 → 20:1216:230 min16:23158 min15 Aug
Kolkata23:16 → 20:1215:340 min15:33155 min15 Aug
Singapore00:46 → 21:4215:480 min15:48146 min15 Aug
Sydney03:46 → 00:4215:140 min15:15130 min15 Aug
Suva05:41 → 02:3715:320 min15:32138 min15 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
bahula-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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