Ruling · Bahulā Caturthī · 1980

Friday 29 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 218 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 28 August

Caturthī is absent from sāyāhna. Not taken.

16:16 sāyāhna beginssunset 18:55
15:5216:1616:4017:0417:2817:5218:1618:4019:0419:28

0 of 158 minutes covered

Late afternoon of Friday 29 August

Taken. The only late afternoon Caturthī reaches.

16:15 sāyāhna beginssunset 18:53
15:5116:1516:3917:0317:2717:5118:1518:3919:0319:27

158 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 01:45 on Fri 29 Aug to 22:31 on Fri 29 Aug.

    1980-08-28T17:45:05Z → 1980-08-29T14:31:24Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:16–18:55 on the 28th, 16:15–18:53 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 0 of 158 minutes on the 28th and 158 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 13094 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1980: Friday 29 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1980 falls on Friday 29 August. Caturthī runs from 01:45 on Fri 29 Aug to 22:31 on Fri 29 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1980/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 29 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 29 Aug
compat-drikpanchangComparison profileFri 29 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 Angeles10:45 → 07:3116:47156 min16:470 min28 Aug
Chicago12:45 → 09:3116:50159 min16:490 min28 Aug
Jersey City13:45 → 10:3116:55159 min16:540 min28 Aug
Port of Spain13:45 → 10:3115:49148 min15:490 min28 Aug
London18:45 → 15:3117:1070 min17:080 min28 Aug
Durban19:45 → 16:3115:220 min15:2269 min29 Aug
Dubai21:45 → 18:3116:090 min16:08143 min29 Aug
Delhi23:15 → 20:0116:130 min16:12154 min29 Aug
Kolkata23:15 → 20:0115:250 min15:25152 min29 Aug
Singapore01:15 → 22:0116:140 min16:14146 min29 Aug
Sydney03:45 → 00:3115:190 min15:19135 min29 Aug
Suva05:45 → 02:3115:380 min15:38140 min29 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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