Ruling · Bahulā Caturthī · 1994

Wednesday 24 August

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 05 s away. Say “contested”.

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 24 August

Taken. Both late afternoons qualify; the rule takes the first.

16:21 sāyāhna beginssunset 19:01
Caturthī begins 16:24:50
15:5716:2116:4517:0917:3317:5718:2118:4519:0919:33

156 of 160 minutes covered, the last 156

Late afternoon of Thursday 25 August

Qualifies with 109 of 160 minutes. Not taken.

16:20 sāyāhna beginssunset 19:00
Caturthī ends 18:08:32
15:5616:2016:4417:0817:3217:5618:2018:4419:0819:32

109 of 160 minutes covered, the first 109

Caturthī presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 16:25 on Wed 24 Aug to 18:09 on Thu 25 Aug.

    1994-08-24T08:24:51Z → 1994-08-25T10:08:33Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:21–19:01 on the 24th, 16:20–19:00 on the 25th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 156 of 160 minutes on the 24th and 109 of 160 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both late afternoons qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 245 s < 300 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1994: Wednesday 24 August.

    confidence: boundary (margin)

Say it like this

In Baoding, Bahulā Caturthī 1994 falls on Wednesday 24 August. Caturthī runs from 16:25 on Wed 24 Aug to 18:09 on Thu 25 Aug and covers 156 of 160 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 109 minutes; by the rule the first late afternoon is taken. It is 4 min 05 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1994/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 24 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 24 Aug
compat-drikpanchangComparison profileWed 24 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 24thCoveredSāyāhna 25thCoveredRuled
Los Angeles01:25 → 03:0916:51158 min16:500 min24 Aug
Chicago03:25 → 05:0916:55162 min16:540 min24 Aug
Jersey City04:25 → 06:0917:00161 min16:590 min24 Aug
Port of Spain04:25 → 06:0915:51149 min15:510 min24 Aug
London09:25 → 11:0917:16169 min17:140 min24 Aug
Durban10:25 → 12:0915:21135 min15:210 min24 Aug
Dubai12:25 → 14:0916:12154 min16:110 min24 Aug
Delhi13:55 → 15:3916:16155 min16:160 min24 Aug
Kolkata13:55 → 15:3915:28153 min15:2811 min24 Aug
Singapore16:25 → 18:0916:46146 min16:4583 min24 Aug
Sydney18:25 → 20:0915:180 min15:18134 min25 Aug
Suva20:25 → 22:0915:380 min15:38140 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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