Ruling · Bahulā Caturthī · 1975

Monday 25 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 180 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 Monday 25 August

Taken. The only late afternoon Caturthī reaches.

16:20 sāyāhna beginssunset 19:00
15:5616:2016:4417:0817:3217:5618:2018:4419:0819:32

160 of 160 minutes covered

Late afternoon of Tuesday 26 August

Caturthī is absent from sāyāhna. Not taken.

16:19 sāyāhna beginssunset 18:59
15:5516:1916:4317:0717:3117:5518:1918:4319:0719:31

0 of 160 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 10:51 on Mon 25 Aug to 13:19 on Tue 26 Aug.

    1975-08-25T02:51:14Z → 1975-08-26T05:19:21Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:20–19:00 on the 25th, 16:19–18:59 on the 26th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 160 of 160 minutes on the 25th and 0 of 160 on the 26th.

    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 10791 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1975: Monday 25 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1975 falls on Monday 25 August. Caturthī runs from 10:51 on Mon 25 Aug to 13:19 on Tue 26 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1975/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 25 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 25 Aug
compat-drikpanchangComparison profileMon 25 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 25thCoveredSāyāhna 26thCoveredRuled
Los Angeles19:51 → 22:1916:51157 min16:500 min25 Aug
Chicago21:51 → 00:1916:55161 min16:530 min25 Aug
Jersey City22:51 → 01:1916:59161 min16:580 min25 Aug
Port of Spain22:51 → 01:1915:51149 min15:510 min25 Aug
London03:51 → 06:1917:15168 min17:130 min25 Aug
Durban04:51 → 07:1915:21135 min15:210 min25 Aug
Dubai06:51 → 09:1916:11154 min16:110 min25 Aug
Delhi08:21 → 10:4916:16155 min16:150 min25 Aug
Kolkata08:21 → 10:4915:28153 min15:270 min25 Aug
Singapore10:21 → 12:4916:15146 min16:150 min25 Aug
Sydney12:51 → 15:1915:18133 min15:181 min25 Aug
Suva14:51 → 17:1915:38139 min15:38101 min25 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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