Ruling · Bahulā Caturthī · 2080

Tuesday 3 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 258 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 2 September

Caturthī is absent from sāyāhna. Not taken.

16:11 sāyāhna beginssunset 18:46
15:4716:1116:3516:5917:2317:4718:1118:3518:59

0 of 155 minutes covered

Late afternoon of Tuesday 3 September

Taken. The only late afternoon Caturthī reaches.

16:10 sāyāhna beginssunset 18:45
15:4616:1016:3416:5817:2217:4618:1018:3418:58

155 of 155 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 23:04 on Mon 2 Sep to 23:41 on Tue 3 Sep.

    2080-09-02T15:04:03Z → 2080-09-03T15:41:06Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:11–18:46 on the 2nd, 16:10–18:45 on the 3rd.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 0 of 155 minutes on the 2nd and 155 of 155 on the 3rd.

    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 15471 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2080: Tuesday 3 September.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2080 falls on Tuesday 3 September. Caturthī runs from 23:04 on Mon 2 Sep to 23:41 on Tue 3 Sep and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2080/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 3 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 3 Sep
compat-drikpanchangComparison profileTue 3 Sep
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 2ndCoveredSāyāhna 3rdCoveredRuled
Los Angeles08:04 → 08:4116:42153 min16:420 min2 Sep
Chicago10:04 → 10:4116:44156 min16:430 min2 Sep
Jersey City11:04 → 11:4116:49156 min16:480 min2 Sep
Port of Spain11:04 → 11:4115:47147 min15:460 min2 Sep
London16:04 → 16:4117:01161 min17:000 min2 Sep
Durban17:04 → 17:4115:2438 min15:24137 min2 Sep
Dubai19:04 → 19:4116:050 min16:04151 min3 Sep
Delhi20:34 → 21:1116:090 min16:08152 min3 Sep
Kolkata20:34 → 21:1115:220 min15:21150 min3 Sep
Singapore23:04 → 23:4116:430 min16:42145 min3 Sep
Sydney01:04 → 01:4115:210 min15:21138 min3 Sep
Suva03:04 → 03:4115:380 min15:38141 min3 Sep
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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