Ruling · Bahulā Caturthī · 1981

Wednesday 19 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 54 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 Tuesday 18 August

Caturthī is absent from sāyāhna. Not taken.

16:26 sāyāhna beginssunset 19:09
16:0216:2616:5017:1417:3818:0218:2618:5019:1419:38

0 of 163 minutes covered

Late afternoon of Wednesday 19 August

Taken. The only late afternoon Caturthī reaches.

16:25 sāyāhna beginssunset 19:08
Caturthī ends 18:14:13
16:0116:2516:4917:1317:3718:0118:2518:4919:1319:37

109 of 163 minutes covered, the first 109

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 20:18 on Tue 18 Aug to 18:14 on Wed 19 Aug.

    1981-08-18T12:18:20Z → 1981-08-19T10:14:14Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:26–19:09 on the 18th, 16:25–19:08 on the 19th.

    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 163 minutes on the 18th and 109 of 163 on the 19th.

    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 3218 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1981: Wednesday 19 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1981 falls on Wednesday 19 August. Caturthī runs from 20:18 on Tue 18 Aug to 18:14 on Wed 19 Aug and covers 109 of 163 minutes of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1981/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 19 Aug
compat-drikpanchangComparison profileWed 19 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 18thCoveredSāyāhna 19thCoveredRuled
Los Angeles05:18 → 03:1416:56160 min16:550 min18 Aug
Chicago07:18 → 05:1417:01165 min17:000 min18 Aug
Jersey City08:18 → 06:1417:06164 min17:050 min18 Aug
Port of Spain08:18 → 06:1415:54149 min15:530 min18 Aug
London13:18 → 11:1417:24173 min17:220 min18 Aug
Durban14:18 → 12:1415:20133 min15:200 min18 Aug
Dubai16:18 → 14:1416:15153 min16:150 min18 Aug
Delhi17:48 → 15:4416:2069 min16:200 min18 Aug
Kolkata17:48 → 15:4415:3218 min15:3113 min18 Aug
Singapore19:48 → 17:4416:170 min16:1787 min19 Aug
Sydney22:18 → 20:1415:160 min15:16131 min19 Aug
Suva00:18 → 22:1415:380 min15:38138 min19 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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