Ruling · Bahulā Caturthī · 2020

Friday 7 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 442 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 6 August

Caturthī is absent from sāyāhna. Not taken.

16:36 sāyāhna beginssunset 19:24
16:1216:3617:0017:2417:4818:1218:3619:0019:2419:48

0 of 168 minutes covered

Late afternoon of Friday 7 August

Taken. The only late afternoon Caturthī reaches.

16:35 sāyāhna beginssunset 19:22
16:1116:3516:5917:2317:4718:1118:3518:5919:2319:47

168 of 168 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 02:45 on Fri 7 Aug to 04:37 on Sat 8 Aug.

    2020-08-06T18:45:22Z → 2020-08-07T20:36:41Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:36–19:24 on the 6th, 16:35–19:22 on the 7th.

    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 168 minutes on the 6th and 168 of 168 on the 7th.

    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 26509 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2020: Friday 7 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2020 falls on Friday 7 August. Caturthī runs from 02:45 on Fri 7 Aug to 04:37 on Sat 8 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2020/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 7 Aug
compat-drikpanchangComparison profileFri 7 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 6thCoveredSāyāhna 7thCoveredRuled
Los Angeles11:45 → 13:3717:04164 min17:040 min6 Aug
Chicago13:45 → 15:3717:12170 min17:110 min6 Aug
Jersey City14:45 → 16:3717:16169 min17:150 min6 Aug
Port of Spain14:45 → 16:3715:57150 min15:5740 min6 Aug
London19:45 → 21:3717:3853 min17:37181 min6 Aug
Durban20:45 → 22:3715:170 min15:17130 min7 Aug
Dubai22:45 → 00:3716:220 min16:21158 min7 Aug
Delhi00:15 → 02:0716:270 min16:27160 min7 Aug
Kolkata00:15 → 02:0715:370 min15:37157 min7 Aug
Singapore02:45 → 04:3716:490 min16:49146 min7 Aug
Sydney04:45 → 06:3715:120 min15:12127 min7 Aug
Suva06:45 → 08:3715:370 min15:37137 min7 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

About Ahargaṇa