Ruling · Bahulā Caturthī · 1997

Thursday 21 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 494 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 Thursday 21 August

Taken. The only late afternoon Caturthī reaches.

16:23 sāyāhna beginssunset 19:05
15:5916:2316:4717:1117:3517:5918:2318:4719:1119:35

162 of 162 minutes covered

Late afternoon of Friday 22 August

Caturthī is absent from sāyāhna. Not taken.

16:22 sāyāhna beginssunset 19:04
15:5816:2216:4617:1017:3417:5818:2218:4619:1019:34

0 of 161 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 08:10 on Thu 21 Aug to 05:04 on Fri 22 Aug.

    1997-08-21T00:09:47Z → 1997-08-21T21:03:43Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:23–19:05 on the 21st, 16:22–19:04 on the 22nd.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 162 of 162 minutes on the 21st and 0 of 161 on the 22nd.

    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 29614 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1997: Thursday 21 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1997 falls on Thursday 21 August. Caturthī runs from 08:10 on Thu 21 Aug to 05:04 on Fri 22 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1997/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 21 Aug
compat-drikpanchangComparison profileThu 21 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 21stCoveredSāyāhna 22ndCoveredRuled
Los Angeles17:10 → 14:0416:540 min16:530 min20 Aug
Chicago19:10 → 16:0416:580 min16:570 min20 Aug
Jersey City20:10 → 17:0417:031 min17:020 min21 Aug
Port of Spain20:10 → 17:0415:5271 min15:520 min21 Aug
London01:10 → 22:0417:19171 min17:180 min21 Aug
Durban02:10 → 23:0415:20134 min15:210 min21 Aug
Dubai04:10 → 01:0416:14155 min16:130 min21 Aug
Delhi05:40 → 02:3416:18156 min16:180 min21 Aug
Kolkata05:40 → 02:3415:30154 min15:290 min21 Aug
Singapore08:10 → 05:0416:46146 min16:460 min21 Aug
Sydney10:10 → 07:0415:17132 min15:170 min21 Aug
Suva12:10 → 09:0415:38139 min15:380 min21 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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