Ruling · Bahulā Caturthī · 1973

Friday 17 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 302 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 Friday 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

163 of 163 minutes covered

Late afternoon of Saturday 18 August

Caturthī is absent from sāyāhna. Not taken.

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

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 11:25 on Fri 17 Aug to 10:56 on Sat 18 Aug.

    1973-08-17T03:24:51Z → 1973-08-18T02:55:33Z

  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 163 of 163 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 18138 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1973: Friday 17 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1973 falls on Friday 17 August. Caturthī runs from 11:25 on Fri 17 Aug to 10:56 on Sat 18 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1973/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 17 Aug
compat-drikpanchangComparison profileFri 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 17thCoveredSāyāhna 18thCoveredRuled
Los Angeles20:25 → 19:5616:57160 min16:560 min17 Aug
Chicago22:25 → 21:5617:02165 min17:010 min17 Aug
Jersey City23:25 → 22:5617:07165 min17:060 min17 Aug
Port of Spain23:25 → 22:5615:54149 min15:540 min17 Aug
London04:25 → 03:5617:25174 min17:240 min17 Aug
Durban05:25 → 04:5615:19133 min15:200 min17 Aug
Dubai07:25 → 06:5616:16156 min16:160 min17 Aug
Delhi08:55 → 08:2616:21157 min16:200 min17 Aug
Kolkata08:55 → 08:2615:32155 min15:320 min17 Aug
Singapore10:55 → 10:2616:17146 min16:170 min17 Aug
Sydney13:25 → 12:5615:16131 min15:160 min17 Aug
Suva15:25 → 14:5615:38138 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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