Ruling · Bahulā Caturthī · 1907

Monday 26 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 206 minutes.

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 Monday 26 August

Taken. The only late afternoon Caturthī reaches.

16:20 sāyāhna beginssunset 18:59
15:5616:2016:4417:0817:3217:5618:2018:4419:0819:32

160 of 160 minutes covered

Late afternoon of Tuesday 27 August

Caturthī is absent from sāyāhna. Not taken.

16:19 sāyāhna beginssunset 18:58
15:5516:1916:4317:0717:3117:5518:1918:4319:0719:31

0 of 159 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 12:53 on Mon 26 Aug to 11:38 on Tue 27 Aug.

    1907-08-26T04:53:14Z → 1907-08-27T03:37:56Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:20–18:59 on the 26th, 16:19–18:58 on the 27th.

    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 26th and 0 of 159 on the 27th.

    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 12385 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1907: Monday 26 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1907 falls on Monday 26 August. Caturthī runs from 12:53 on Mon 26 Aug to 11:38 on Tue 27 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1907/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 26 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 26 Aug
compat-drikpanchangComparison profileMon 26 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 26thCoveredSāyāhna 27thCoveredRuled
Los Angeles20:53 → 19:3815:50157 min15:490 min26 Aug
Chicago22:53 → 21:3815:54161 min15:530 min26 Aug
Jersey City23:53 → 22:3815:59161 min15:580 min26 Aug
Port of Spain00:53 → 23:3815:51149 min15:500 min26 Aug
London04:53 → 03:3816:14168 min16:130 min26 Aug
Durban06:53 → 05:3815:21135 min15:210 min26 Aug
Dubai08:34 → 07:1915:52154 min15:510 min26 Aug
Delhi10:23 → 09:0816:15155 min16:150 min26 Aug
Kolkata10:23 → 09:0815:27153 min15:270 min26 Aug
Singapore11:53 → 10:3815:45146 min15:450 min26 Aug
Sydney14:53 → 13:3815:18134 min15:180 min26 Aug
Suva16:48 → 15:3315:3364 min15:330 min26 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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