Ruling · Bahulā Caturthī · 1966

Saturday 3 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 38 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 Saturday 3 September

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

16:11 sāyāhna beginssunset 18:47
15:4716:1116:3516:5917:2317:4718:1118:3518:59

156 of 156 minutes covered

Late afternoon of Sunday 4 September

Qualifies with 99 of 155 minutes. Not taken.

16:10 sāyāhna beginssunset 18:45
Caturthī ends 17:48:50
15:4616:1016:3416:5817:2217:4618:1018:3418:58

99 of 155 minutes covered, the first 99

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 15:33 on Sat 3 Sep to 17:49 on Sun 4 Sep.

    1966-09-03T07:33:09Z → 1966-09-04T09:48:50Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:11–18:47 on the 3rd, 16:10–18:45 on the 4th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 156 of 156 minutes on the 3rd and 99 of 155 on the 4th.

    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 2263 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1966: Saturday 3 September.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1966 falls on Saturday 3 September. Caturthī runs from 15:33 on Sat 3 Sep to 17:49 on Sun 4 Sep and covers all of sāyāhna that late afternoon. It also reaches the next late afternoon for 99 minutes; by the rule the first late afternoon is taken.

ahargana.org/baoding/festivals/1966/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 3 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 3 Sep
compat-drikpanchangComparison profileSat 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 3rdCoveredSāyāhna 4thCoveredRuled
Los Angeles00:33 → 02:4916:43154 min16:420 min3 Sep
Chicago02:33 → 04:4916:44157 min16:430 min3 Sep
Jersey City03:33 → 05:4916:50156 min16:480 min3 Sep
Port of Spain03:33 → 05:4915:47148 min15:460 min3 Sep
London08:33 → 10:4917:02162 min17:000 min3 Sep
Durban09:33 → 11:4915:23138 min15:230 min3 Sep
Dubai11:33 → 13:4916:05151 min16:040 min3 Sep
Delhi13:03 → 15:1916:09152 min16:080 min3 Sep
Kolkata13:03 → 15:1915:22150 min15:210 min3 Sep
Singapore15:03 → 17:1916:12146 min16:1267 min3 Sep
Sydney17:33 → 19:4915:215 min15:21137 min3 Sep
Suva19:33 → 21:4915:380 min15:38141 min4 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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