Ruling · Bahulā Caturthī · 2057

Saturday 18 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 8 min 00 s.

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 Friday 17 August

Caturthī is absent from sāyāhna. Not taken.

16:27 sāyāhna beginssunset 19:10
Caturthī begins 19:17:57
16:0316:2716:5117:1517:3918:0318:2718:5119:1519:39

0 of 163 minutes covered

Late afternoon of Saturday 18 August

Taken. The only late afternoon Caturthī reaches.

16:26 sāyāhna beginssunset 19:09
Caturthī ends 18:33:29
16:0216:2616:5017:1417:3818:0218:2618:5019:1419:38

128 of 163 minutes covered, the first 128

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 19:18 on Fri 17 Aug to 18:33 on Sat 18 Aug.

    2057-08-17T11:17:58Z → 2057-08-18T10:33:29Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:27–19:10 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 163 minutes on the 17th and 128 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 480 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2057: Saturday 18 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2057 falls on Saturday 18 August. Caturthī runs from 19:18 on Fri 17 Aug to 18:33 on Sat 18 Aug and covers 128 of 163 minutes of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2057/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 18 Aug
compat-drikpanchangComparison profileSat 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 Angeles04:18 → 03:3316:57160 min16:560 min17 Aug
Chicago06:18 → 05:3317:02165 min17:010 min17 Aug
Jersey City07:18 → 06:3317:06164 min17:050 min17 Aug
Port of Spain07:18 → 06:3315:54149 min15:540 min17 Aug
London12:18 → 11:3317:24173 min17:230 min17 Aug
Durban13:18 → 12:3315:20133 min15:200 min17 Aug
Dubai15:18 → 14:3316:16155 min16:150 min17 Aug
Delhi16:48 → 16:0316:21130 min16:200 min17 Aug
Kolkata16:48 → 16:0315:3278 min15:3232 min17 Aug
Singapore19:18 → 18:3316:470 min16:47106 min18 Aug
Sydney21:18 → 20:3315:160 min15:16131 min18 Aug
Suva23:18 → 22:3315:380 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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