Ruling · Mahālaya Amāvāsyā (Sarvapitṛ Amāvāsyā) · 1908

Friday 25 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 310 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two afternoons

One ghaṭī is 24 minutes. Aparāhṇa is 10th to 12th of 15 day muhūrtas.

Afternoon of Thursday 24 September

Amāvasyā is absent from aparāhṇa. Not taken.

13:23 aparāhṇa beginsaparāhṇa ends 15:48
12:5913:2313:4714:1114:3514:5915:2315:4716:11

0 of 145 minutes covered

Afternoon of Friday 25 September

Taken. The only afternoon Amāvasyā reaches.

13:22 aparāhṇa beginsaparāhṇa ends 15:47
12:5813:2213:4614:1014:3414:5815:2215:4616:10

145 of 145 minutes covered

Amāvasyā presentAparāhṇa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Amāvasyā runs from 20:58 on Thu 24 Sep to 22:59 on Fri 25 Sep.

    1908-09-24T12:58:15Z → 1908-09-25T14:59:08Z

  2. 02

    Kāla

    Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:23–15:48 on the 24th, 13:22–15:47 on the 25th.

    aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Amāvasyā must be present during aparāhṇa. It covers 0 of 145 minutes on the 24th and 145 of 145 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one afternoon qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 18624 s

  5. 05

    Ruling

    Mahālaya Amāvāsyā, Baoding, 1908: Friday 25 September.

    confidence: determinate

Say it like this

In Baoding, Mahālaya Amāvāsyā 1908 falls on Friday 25 September. Amāvasyā runs from 20:58 on Thu 24 Sep to 22:59 on Fri 25 Sep and covers all of aparāhṇa that afternoon.

ahargana.org/baoding/festivals/1908/mahalaya-amavasya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 25 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 25 Sep
compat-drikpanchangComparison profileFri 25 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/mahalaya-amavasya · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Kṛṣṇa · Amāvasyā
Kāla
Aparāhṇa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“K 30 Mahalaya amavasya (aparahnavyapini)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103. The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAmāvasyāAparāhṇa 24thCoveredAparāhṇa 25thCoveredRuled
Los Angeles04:58 → 06:5912:57145 min12:570 min24 Sep
Chicago06:58 → 08:5912:55145 min12:540 min24 Sep
Jersey City07:58 → 09:5913:00145 min13:000 min24 Sep
Port of Spain08:58 → 10:5913:11145 min13:100 min24 Sep
London12:58 → 14:5913:05145 min13:04115 min24 Sep
Durban14:58 → 16:5913:0129 min13:01146 min25 Sep
Dubai16:39 → 18:4013:040 min13:04145 min25 Sep
Delhi18:28 → 20:2913:260 min13:25145 min25 Sep
Kolkata18:28 → 20:2912:410 min12:41145 min25 Sep
Singapore19:58 → 21:5913:090 min13:09145 min25 Sep
Sydney22:58 → 00:5913:010 min13:00146 min25 Sep
Suva00:53 → 02:5413:060 min13:06146 min25 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahalaya-amavasya@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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