Ruling · Bahulā Caturthī · 2053

Monday 1 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 62 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 1 September

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

16:12 sāyāhna beginssunset 18:48
Caturthī begins 17:46:01
15:4816:1216:3617:0017:2417:4818:1218:3619:00

62 of 156 minutes covered, the last 62

Late afternoon of Tuesday 2 September

Qualifies with 79 of 156 minutes. Not taken.

16:11 sāyāhna beginssunset 18:47
Caturthī ends 17:29:35
15:4716:1116:3516:5917:2317:4718:1118:3518:59

79 of 156 minutes covered, the first 79

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 17:46 on Mon 1 Sep to 17:30 on Tue 2 Sep.

    2053-09-01T09:46:01Z → 2053-09-02T09:29:35Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:12–18:48 on the 1st, 16:11–18:47 on the 2nd.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 62 of 156 minutes on the 1st and 79 of 156 on the 2nd.

    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 3734 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2053: Monday 1 September.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2053 falls on Monday 1 September. Caturthī runs from 17:46 on Mon 1 Sep to 17:30 on Tue 2 Sep and covers 62 of 156 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 79 minutes; by the rule the first late afternoon is taken.

ahargana.org/baoding/festivals/2053/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 1 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 1 Sep
compat-drikpanchangComparison profileMon 1 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 1stCoveredSāyāhna 2ndCoveredRuled
Los Angeles02:46 → 02:3016:44154 min16:430 min1 Sep
Chicago04:46 → 04:3016:46157 min16:450 min1 Sep
Jersey City05:46 → 05:3016:51157 min16:500 min1 Sep
Port of Spain05:46 → 05:3015:47148 min15:470 min1 Sep
London10:46 → 10:3017:03162 min17:020 min1 Sep
Durban11:46 → 11:3015:23138 min15:230 min1 Sep
Dubai13:46 → 13:3016:06151 min16:050 min1 Sep
Delhi15:16 → 15:0016:10153 min16:090 min1 Sep
Kolkata15:16 → 15:0015:23151 min15:220 min1 Sep
Singapore17:46 → 17:3016:4382 min16:4347 min1 Sep
Sydney19:46 → 19:3015:200 min15:21137 min2 Sep
Suva21:46 → 21:3015:380 min15:38141 min2 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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