Ruling · Bahulā Caturthī · 1924

Monday 18 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 308 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Sunday 17 August

Caturthī is absent from sāyāhna. Not taken.

16:27 sāyāhna beginssunset 19:11
16:0316:2716:5117:1517:3918:0318:2718:5119:1519:39

0 of 164 minutes covered

Late afternoon of Monday 18 August

Taken. The only late afternoon Caturthī reaches.

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

163 of 163 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 00:21 on Mon 18 Aug to 00:18 on Tue 19 Aug.

    1924-08-17T16:20:42Z → 1924-08-18T16:17:51Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:27–19:11 on the 17th, 16:26–19:09 on the 18th.

    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 164 minutes on the 17th and 163 of 163 on the 18th.

    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 18504 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1924: Monday 18 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1924 falls on Monday 18 August. Caturthī runs from 00:21 on Mon 18 Aug to 00:18 on Tue 19 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1924/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 18 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 18 Aug
compat-drikpanchangComparison profileMon 18 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 17thCoveredSāyāhna 18thCoveredRuled
Los Angeles08:21 → 08:1815:57160 min15:560 min17 Aug
Chicago11:21 → 11:1817:02165 min17:010 min17 Aug
Jersey City12:21 → 12:1817:07165 min17:060 min17 Aug
Port of Spain12:21 → 12:1815:54149 min15:540 min17 Aug
London17:21 → 17:1817:25174 min17:240 min17 Aug
Durban18:21 → 18:1815:190 min15:20133 min18 Aug
Dubai20:21 → 20:1816:160 min16:16155 min18 Aug
Delhi21:51 → 21:4816:210 min16:20157 min18 Aug
Kolkata21:51 → 21:4815:320 min15:32154 min18 Aug
Singapore23:21 → 23:1815:470 min15:47146 min18 Aug
Sydney02:21 → 02:1815:150 min15:16131 min18 Aug
Suva04:21 → 04:1815:380 min15:38138 min18 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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