Ruling · Bahulā Caturthī · 1911

Sunday 13 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 248 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 Sunday 13 August

Taken. The only late afternoon Caturthī reaches.

16:31 sāyāhna beginssunset 19:17
16:0716:3116:5517:1917:4318:0718:3118:5519:1919:43

166 of 166 minutes covered

Late afternoon of Monday 14 August

Caturthī is absent from sāyāhna. Not taken.

16:31 sāyāhna beginssunset 19:16
16:0716:3116:5517:1917:4318:0718:3118:5519:1919:43

0 of 165 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 12:23 on Sun 13 Aug to 12:07 on Mon 14 Aug.

    1911-08-13T04:23:02Z → 1911-08-14T04:07:11Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:31–19:17 on the 13th, 16:31–19:16 on the 14th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 166 of 166 minutes on the 13th and 0 of 165 on the 14th.

    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 14898 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1911: Sunday 13 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1911 falls on Sunday 13 August. Caturthī runs from 12:23 on Sun 13 Aug to 12:07 on Mon 14 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1911/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 13 Aug
compat-drikpanchangComparison profileSun 13 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 13thCoveredSāyāhna 14thCoveredRuled
Los Angeles20:23 → 20:0716:01162 min16:000 min13 Aug
Chicago22:23 → 22:0716:07168 min16:060 min13 Aug
Jersey City23:23 → 23:0716:11167 min16:100 min13 Aug
Port of Spain00:23 → 00:0715:56150 min15:550 min13 Aug
London04:23 → 04:0716:31178 min16:300 min13 Aug
Durban06:23 → 06:0715:18131 min15:180 min13 Aug
Dubai08:04 → 07:4816:00157 min15:590 min13 Aug
Delhi09:53 → 09:3716:24159 min16:240 min13 Aug
Kolkata09:53 → 09:3715:35156 min15:340 min13 Aug
Singapore11:23 → 11:0715:48146 min15:480 min13 Aug
Sydney14:23 → 14:0715:14129 min15:140 min13 Aug
Suva16:18 → 16:0215:3291 min15:3230 min13 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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