Ruling · Bahulā Caturthī · 2010

Saturday 28 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 372 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 Saturday 28 August

Taken. The only late afternoon Caturthī reaches.

16:17 sāyāhna beginssunset 18:55
15:5316:1716:4117:0517:2917:5318:1718:4119:0519:29

158 of 158 minutes covered

Late afternoon of Sunday 29 August

Caturthī is absent from sāyāhna. Not taken.

16:16 sāyāhna beginssunset 18:54
15:5216:1616:4017:0417:2817:5218:1618:4019:0419:28

0 of 158 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 08:06 on Sat 28 Aug to 10:04 on Sun 29 Aug.

    2010-08-28T00:06:16Z → 2010-08-29T02:03:58Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:17–18:55 on the 28th, 16:16–18:54 on the 29th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 158 of 158 minutes on the 28th and 0 of 158 on the 29th.

    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 22304 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2010: Saturday 28 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2010 falls on Saturday 28 August. Caturthī runs from 08:06 on Sat 28 Aug to 10:04 on Sun 29 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2010/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 28 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 28 Aug
compat-drikpanchangComparison profileSat 28 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 28thCoveredSāyāhna 29thCoveredRuled
Los Angeles17:06 → 19:0416:48136 min16:470 min27 Aug
Chicago19:06 → 21:0416:51160 min16:500 min27 Aug
Jersey City20:06 → 22:0416:56159 min16:550 min28 Aug
Port of Spain20:06 → 22:0415:49148 min15:490 min28 Aug
London01:06 → 03:0417:10166 min17:080 min28 Aug
Durban02:06 → 04:0415:22136 min15:220 min28 Aug
Dubai04:06 → 06:0416:09153 min16:080 min28 Aug
Delhi05:36 → 07:3416:13154 min16:120 min28 Aug
Kolkata05:36 → 07:3415:26152 min15:250 min28 Aug
Singapore08:06 → 10:0416:44146 min16:440 min28 Aug
Sydney10:06 → 12:0415:19135 min15:190 min28 Aug
Suva12:06 → 14:0415:38140 min15:380 min28 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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