Ruling · Bahulā Caturthī · 1900

Monday 13 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 13 August

Taken. The only late afternoon Caturthī reaches.

16:36 sāyāhna beginssunset 19:21
Caturthī begins 19:08:31
16:1216:3617:0017:2417:4818:1218:3619:0019:2419:48

13 of 165 minutes covered, the last 13

Late afternoon of Tuesday 14 August

Caturthī is absent from sāyāhna. Not taken.

16:35 sāyāhna beginssunset 19:20
16:1116:3516:5917:2317:4718:1118:3518:5919:2319:47

0 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 19:08 on Mon 13 Aug to 15:51 on Tue 14 Aug.

    1900-08-13T11:02:48Z → 1900-08-14T07:46:23Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:36–19:21 on the 13th, 16:35–19:20 on the 14th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 13 of 165 minutes on the 13th and 0 of 165 on the 14th.

    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 802 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 1900: Monday 13 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 1900 falls on Monday 13 August. Caturthī runs from 19:08 on Mon 13 Aug to 15:51 on Tue 14 Aug and covers 13 of 165 minutes of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1900/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 13thCoveredSāyāhna 14thCoveredRuled
Los Angeles03:03 → 23:4616:00162 min15:590 min13 Aug
Chicago05:03 → 01:4616:06167 min16:050 min13 Aug
Jersey City06:03 → 02:4616:11167 min16:100 min13 Aug
Port of Spain07:03 → 03:4615:55150 min15:550 min13 Aug
London11:03 → 07:4616:30177 min16:290 min13 Aug
Durban12:33 → 09:1614:48132 min14:480 min13 Aug
Dubai14:44 → 11:2716:00157 min15:590 min13 Aug
Delhi16:24 → 13:0716:15150 min16:140 min13 Aug
Kolkata16:24 → 13:0715:2597 min15:250 min13 Aug
Singapore17:58 → 14:4115:4311 min15:430 min13 Aug
Sydney21:03 → 17:4615:140 min15:14129 min14 Aug
Suva22:58 → 19:4115:320 min15:32138 min14 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