Ruling · Bahulā Caturthī · 1987

Wednesday 12 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 487 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two late afternoons

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

Late afternoon of Wednesday 12 August

Taken. The only late afternoon Caturthī reaches.

17:32 sāyāhna beginssunset 20:18
17:0817:3217:5618:2018:4419:0819:3219:5620:2020:44

166 of 166 minutes covered

Late afternoon of Thursday 13 August

Caturthī is absent from sāyāhna. Not taken.

17:31 sāyāhna beginssunset 20:16
17:0717:3117:5518:1918:4319:0719:3119:5520:1920:43

0 of 165 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 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug.

    1987-08-12T00:25:00Z → 1987-08-12T22:11:42Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 17:32–20:18 on the 12th, 17:31–20:16 on the 13th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 166 of 166 minutes on the 12th and 0 of 165 on the 13th.

    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 29206 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1987: Wednesday 12 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1987 falls on Wednesday 12 August. Caturthī runs from 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1987/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 12 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 12 Aug
compat-drikpanchangComparison profileWed 12 Aug
No institution has a recorded ruling for Baoding.

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 12thCoveredSāyāhna 13thCoveredRuled
Los Angeles17:25 → 15:1217:010 min17:000 min11 Aug
Chicago19:25 → 17:1217:074 min17:060 min11 Aug
Jersey City20:25 → 18:1217:1260 min17:110 min12 Aug
Port of Spain20:25 → 18:1215:56136 min15:560 min12 Aug
London01:25 → 23:1217:32178 min17:310 min12 Aug
Durban02:25 → 00:1215:18131 min15:180 min12 Aug
Dubai04:25 → 02:1216:19157 min16:190 min12 Aug
Delhi05:55 → 03:4216:25159 min16:240 min12 Aug
Kolkata05:55 → 03:4215:35156 min15:350 min12 Aug
Singapore08:25 → 06:1216:48146 min16:480 min12 Aug
Sydney10:25 → 08:1215:14129 min15:140 min12 Aug
Suva12:25 → 10:1215:37137 min15:370 min12 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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