Ruling · Bahulā Caturthī · 1905

Friday 18 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 35 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 Friday 18 August

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

16:27 sāyāhna beginssunset 19:10
16:0316:2716:5117:1517:3918:0318:2718:5119:1519:39

163 of 163 minutes covered

Late afternoon of Saturday 19 August

Qualifies with 100 of 163 minutes. Not taken.

16:26 sāyāhna beginssunset 19:09
Caturthī ends 18:05:48
16:0216:2616:5017:1417:3818:0218:2618:5019:1419:38

100 of 163 minutes covered, the first 100

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 15:52 on Fri 18 Aug to 18:06 on Sat 19 Aug.

    1905-08-18T07:51:44Z → 1905-08-19T10:05:48Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:27–19:10 on the 18th, 16:26–19:09 on the 19th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 163 of 163 minutes on the 18th and 100 of 163 on the 19th.

    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 2096 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1905: Friday 18 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1905 falls on Friday 18 August. Caturthī runs from 15:52 on Fri 18 Aug to 18:06 on Sat 19 Aug and covers all of sāyāhna that late afternoon. It also reaches the next late afternoon for 100 minutes; by the rule the first late afternoon is taken.

ahargana.org/baoding/festivals/1905/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 18 Aug
compat-drikpanchangComparison profileFri 18 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 18thCoveredSāyāhna 19thCoveredRuled
Los Angeles23:52 → 02:0615:57160 min15:560 min18 Aug
Chicago01:52 → 04:0616:02165 min16:010 min18 Aug
Jersey City02:52 → 05:0616:06164 min16:050 min18 Aug
Port of Spain03:52 → 06:0615:54149 min15:530 min18 Aug
London07:52 → 10:0616:24174 min16:230 min18 Aug
Durban09:52 → 12:0615:19133 min15:200 min18 Aug
Dubai11:33 → 13:4715:57156 min15:560 min18 Aug
Delhi13:13 → 15:2716:12157 min16:110 min18 Aug
Kolkata13:13 → 15:2715:23154 min15:224 min18 Aug
Singapore14:52 → 17:0615:47146 min15:4779 min18 Aug
Sydney17:52 → 20:0615:160 min15:16131 min19 Aug
Suva19:47 → 22:0115:330 min15:33138 min19 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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