Ruling · Bahulā Caturthī · 2063

Monday 13 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 62 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Sunday 12 August

Caturthī is absent from sāyāhna. Not taken.

16:31 sāyāhna beginssunset 19:17
16:0716:3116:5517:1917:4318:0718:3118:5519:1919:43

0 of 166 minutes covered

Late afternoon of Monday 13 August

Taken. The only late afternoon Caturthī reaches.

16:31 sāyāhna beginssunset 19:16
16:0716:3116:5517:1917:4318:0718:3118:5519:1919:43

165 of 165 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 20:20 on Sun 12 Aug to 22:40 on Mon 13 Aug.

    2063-08-12T12:19:32Z → 2063-08-13T14:39:32Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:31–19:17 on the 12th, 16:31–19:16 on the 13th.

    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 166 minutes on the 12th and 165 of 165 on the 13th.

    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 3749 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2063: Monday 13 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2063 falls on Monday 13 August. Caturthī runs from 20:20 on Sun 12 Aug to 22:40 on Mon 13 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2063/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 13 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 13 Aug
compat-drikpanchangComparison profileMon 13 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 12thCoveredSāyāhna 13thCoveredRuled
Los Angeles05:20 → 07:4017:01162 min17:000 min12 Aug
Chicago07:20 → 09:4017:07168 min17:060 min12 Aug
Jersey City08:20 → 10:4017:11167 min17:100 min12 Aug
Port of Spain08:20 → 10:4015:56150 min15:560 min12 Aug
London13:20 → 15:4017:31177 min17:300 min12 Aug
Durban14:20 → 16:4015:18131 min15:1981 min12 Aug
Dubai16:20 → 18:4016:19156 min16:19141 min12 Aug
Delhi17:50 → 20:1016:2474 min16:24159 min12 Aug
Kolkata17:50 → 20:1015:3521 min15:35155 min12 Aug
Singapore20:20 → 22:4016:490 min16:48146 min13 Aug
Sydney22:20 → 00:4015:140 min15:15129 min13 Aug
Suva00:20 → 02:4015:380 min15:38137 min13 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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