Ruling · Bahulā Caturthī · 2011

Wednesday 17 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 400 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 17 August

Taken. The only late afternoon Caturthī reaches.

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

164 of 164 minutes covered

Late afternoon of Thursday 18 August

Caturthī is absent from sāyāhna. Not taken.

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

0 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 07:32 on Wed 17 Aug to 09:47 on Thu 18 Aug.

    2011-08-16T23:31:47Z → 2011-08-18T01:46:31Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:27–19:11 on the 17th, 16:27–19:10 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 164 of 164 minutes on the 17th and 0 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 23999 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2011: Wednesday 17 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2011 falls on Wednesday 17 August. Caturthī runs from 07:32 on Wed 17 Aug to 09:47 on Thu 18 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2011/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 17 Aug
compat-drikpanchangComparison profileWed 17 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 16thCoveredSāyāhna 18thCoveredRuled
Los Angeles16:32 → 18:4716:58161 min16:560 min16 Aug
Chicago18:32 → 20:4717:0377 min17:010 min16 Aug
Jersey City19:32 → 21:4717:0821 min17:060 min16 Aug
Port of Spain19:32 → 21:4715:550 min15:540 min17 Aug
London00:32 → 02:4717:270 min17:240 min17 Aug
Durban01:32 → 03:4715:190 min15:200 min17 Aug
Dubai03:32 → 05:4716:170 min16:160 min17 Aug
Delhi05:02 → 07:1716:220 min16:210 min17 Aug
Kolkata05:02 → 07:1715:330 min15:320 min17 Aug
Singapore07:32 → 09:4716:480 min16:470 min17 Aug
Sydney09:32 → 11:4715:150 min15:160 min17 Aug
Suva11:32 → 13:4715:380 min15:380 min17 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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