Ruling · Bahulā Caturthī · 2017

Friday 11 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 430 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 Thursday 10 August

Caturthī is absent from sāyāhna. Not taken.

16:33 sāyāhna beginssunset 19:19
16:0916:3316:5717:2117:4518:0918:3318:5719:2119:45

0 of 166 minutes covered

Late afternoon of Friday 11 August

Taken. The only late afternoon Caturthī reaches.

16:32 sāyāhna beginssunset 19:18
16:0816:3216:5617:2017:4418:0818:3218:5619:2019:44

166 of 166 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 03:03 on Fri 11 Aug to 02:28 on Sat 12 Aug.

    2017-08-10T19:03:26Z → 2017-08-11T18:27:38Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:33–19:19 on the 10th, 16:32–19:18 on the 11th.

    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 166 minutes on the 10th and 166 of 166 on the 11th.

    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 25782 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2017: Friday 11 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2017 falls on Friday 11 August. Caturthī runs from 03:03 on Fri 11 Aug to 02:28 on Sat 12 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2017/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 11 Aug
compat-drikpanchangComparison profileFri 11 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 10thCoveredSāyāhna 11thCoveredRuled
Los Angeles12:03 → 11:2817:02163 min17:010 min10 Aug
Chicago14:03 → 13:2817:08169 min17:070 min10 Aug
Jersey City15:03 → 14:2817:13168 min17:120 min10 Aug
Port of Spain15:03 → 14:2815:56150 min15:560 min10 Aug
London20:03 → 19:2817:3329 min17:32116 min10 Aug
Durban21:03 → 20:2815:180 min15:18131 min11 Aug
Dubai23:03 → 22:2816:200 min16:19157 min11 Aug
Delhi00:33 → 23:5816:250 min16:25159 min11 Aug
Kolkata00:33 → 23:5815:360 min15:35156 min11 Aug
Singapore03:03 → 02:2816:490 min16:49146 min11 Aug
Sydney05:03 → 04:2815:130 min15:14129 min11 Aug
Suva07:03 → 06:2815:370 min15:37137 min11 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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