Ruling · Bahulā Caturthī · 2083

Monday 30 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 29 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 30 August

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

16:15 sāyāhna beginssunset 18:52
Caturthī begins 18:21:28
15:5116:1516:3917:0317:2717:5118:1518:3919:03

30 of 157 minutes covered, the last 30

Late afternoon of Tuesday 31 August

Qualifies with 157 of 157 minutes. Not taken.

16:14 sāyāhna beginssunset 18:50
15:5016:1416:3817:0217:2617:5018:1418:3819:02

157 of 157 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 18:21 on Mon 30 Aug to 19:19 on Tue 31 Aug.

    2083-08-30T10:21:29Z → 2083-08-31T11:19:07Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:15–18:52 on the 30th, 16:14–18:50 on the 31st.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 30 of 157 minutes on the 30th and 157 of 157 on the 31st.

    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 1724 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2083: Monday 30 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2083 falls on Monday 30 August. Caturthī runs from 18:21 on Mon 30 Aug to 19:19 on Tue 31 Aug and covers 30 of 157 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 157 minutes; by the rule the first late afternoon is taken.

ahargana.org/baoding/festivals/2083/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 30 Aug
compat-drikpanchangComparison profileMon 30 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 30thCoveredSāyāhna 31stCoveredRuled
Los Angeles03:21 → 04:1916:46155 min16:450 min30 Aug
Chicago05:21 → 06:1916:49158 min16:470 min30 Aug
Jersey City06:21 → 07:1916:54158 min16:520 min30 Aug
Port of Spain06:21 → 07:1915:49148 min15:480 min30 Aug
London11:21 → 12:1917:07164 min17:050 min30 Aug
Durban12:21 → 13:1915:23137 min15:230 min30 Aug
Dubai14:21 → 15:1916:08152 min16:070 min30 Aug
Delhi15:51 → 16:4916:12153 min16:1138 min30 Aug
Kolkata15:51 → 16:4915:24124 min15:2485 min30 Aug
Singapore18:21 → 19:1916:4448 min16:44146 min30 Aug
Sydney20:21 → 21:1915:200 min15:20136 min31 Aug
Suva22:21 → 23:1915:380 min15:38141 min31 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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