Ruling · Bahulā Caturthī · 2070

Monday 25 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 361 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 Sunday 24 August

Caturthī is absent from sāyāhna. Not taken.

16:20 sāyāhna beginssunset 19:00
15:5616:2016:4417:0817:3217:5618:2018:4419:0819:32

0 of 160 minutes covered

Late afternoon of Monday 25 August

Taken. The only late afternoon Caturthī reaches.

16:19 sāyāhna beginssunset 18:59
15:5516:1916:4317:0717:3117:5518:1918:4319:0719:31

160 of 160 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 02:14 on Mon 25 Aug to 01:00 on Tue 26 Aug.

    2070-08-24T18:14:10Z → 2070-08-25T17:00:09Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:20–19:00 on the 24th, 16:19–18:59 on the 25th.

    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 160 minutes on the 24th and 160 of 160 on the 25th.

    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 21668 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2070: Monday 25 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2070 falls on Monday 25 August. Caturthī runs from 02:14 on Mon 25 Aug to 01:00 on Tue 26 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2070/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 25 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 25 Aug
compat-drikpanchangComparison profileMon 25 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 24thCoveredSāyāhna 25thCoveredRuled
Los Angeles11:14 → 10:0016:51157 min16:500 min24 Aug
Chicago13:14 → 12:0016:55161 min16:540 min24 Aug
Jersey City14:14 → 13:0017:00161 min16:590 min24 Aug
Port of Spain14:14 → 13:0015:51149 min15:510 min24 Aug
London19:14 → 18:0017:1549 min17:1446 min24 Aug
Durban20:14 → 19:0015:220 min15:22136 min25 Aug
Dubai22:14 → 21:0016:120 min16:11153 min25 Aug
Delhi23:44 → 22:3016:160 min16:15155 min25 Aug
Kolkata23:44 → 22:3015:280 min15:27152 min25 Aug
Singapore02:14 → 01:0016:460 min16:45146 min25 Aug
Sydney04:14 → 03:0015:180 min15:19134 min25 Aug
Suva06:14 → 05:0015:380 min15:38140 min25 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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