Ruling · Bahulā Caturthī · 2030

Friday 16 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 65 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 Friday 16 August

Taken. The only late afternoon Caturthī reaches.

16:28 sāyāhna beginssunset 19:12
16:0416:2816:5217:1617:4018:0418:2818:5219:1619:40

164 of 164 minutes covered

Late afternoon of Saturday 17 August

Caturthī is absent from sāyāhna. Not taken.

16:27 sāyāhna beginssunset 19:10
16:0316:2716:5117:1517:3918:0318:2718:5119:1519:39

0 of 163 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 15:12 on Fri 16 Aug to 15:22 on Sat 17 Aug.

    2030-08-16T07:12:17Z → 2030-08-17T07:22:09Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:28–19:12 on the 16th, 16:27–19:10 on the 17th.

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

  3. 03

    Rule

    Caturthī must be present during sāyāhna. It covers 164 of 164 minutes on the 16th and 0 of 163 on the 17th.

    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 3894 s

  5. 05

    Ruling

    Bahulā Caturthī, Baoding, 2030: Friday 16 August.

    confidence: determinate

Say it like this

In Baoding, Bahulā Caturthī 2030 falls on Friday 16 August. Caturthī runs from 15:12 on Fri 16 Aug to 15:22 on Sat 17 Aug and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2030/bahula-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 16 Aug
compat-drikpanchangComparison profileFri 16 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 16thCoveredSāyāhna 17thCoveredRuled
Los Angeles00:12 → 00:2216:58161 min16:570 min16 Aug
Chicago02:12 → 02:2217:03166 min17:020 min16 Aug
Jersey City03:12 → 03:2217:08165 min17:070 min16 Aug
Port of Spain03:12 → 03:2215:54149 min15:540 min16 Aug
London08:12 → 08:2217:26175 min17:250 min16 Aug
Durban09:12 → 09:2215:19133 min15:200 min16 Aug
Dubai11:12 → 11:2216:17156 min16:160 min16 Aug
Delhi12:42 → 12:5216:22158 min16:210 min16 Aug
Kolkata12:42 → 12:5215:33155 min15:320 min16 Aug
Singapore15:12 → 15:2216:48146 min16:470 min16 Aug
Sydney17:12 → 17:2215:1514 min15:16126 min16 Aug
Suva19:12 → 19:2215:380 min15:38138 min17 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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