Ruling · Mahālaya Amāvāsyā (Sarvapitṛ Amāvāsyā) · 2012

Monday 15 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 277 minutes.

Decide it for

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 Sunday 14 October

Amāvasyā is absent from aparāhṇa. Not taken.

13:11 aparāhṇa beginsaparāhṇa ends 15:26
12:4713:1113:3513:5914:2314:4715:1115:3515:59

0 of 135 minutes covered

Afternoon of Monday 15 October

Taken. The only afternoon Amāvasyā reaches.

13:11 aparāhṇa beginsaparāhṇa ends 15:25
12:4713:1113:3513:5914:2314:4715:1115:3515:59

134 of 134 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 23:03 on Sun 14 Oct to 20:03 on Mon 15 Oct.

    2012-10-14T15:02:45Z → 2012-10-15T12:02:31Z

  2. 02

    Kāla

    Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:11–15:26 on the 14th, 13:11–15:25 on the 15th.

    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 135 minutes on the 14th and 134 of 134 on the 15th.

    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 16642 s

  5. 05

    Ruling

    Mahālaya Amāvāsyā, Baoding, 2012: Monday 15 October.

    confidence: determinate

Say it like this

In Baoding, Mahālaya Amāvāsyā 2012 falls on Monday 15 October. Amāvasyā runs from 23:03 on Sun 14 Oct to 20:03 on Mon 15 Oct and covers all of aparāhṇa that afternoon.

ahargana.org/baoding/festivals/2012/mahalaya-amavasya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 15 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 15 Oct
compat-drikpanchangComparison profileMon 15 Oct
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 14thCoveredAparāhṇa 15thCoveredRuled
Los Angeles08:03 → 05:0313:47136 min13:460 min14 Oct
Chicago10:03 → 07:0313:43133 min13:420 min14 Oct
Jersey City11:03 → 08:0313:49134 min13:480 min14 Oct
Port of Spain11:03 → 08:0313:03143 min13:030 min14 Oct
London16:03 → 13:0313:500 min13:500 min14 Oct
Durban17:03 → 14:0312:590 min12:5964 min15 Oct
Dubai19:03 → 16:0313:140 min13:14139 min15 Oct
Delhi20:33 → 17:3313:160 min13:15138 min15 Oct
Kolkata20:33 → 17:3312:320 min12:32140 min15 Oct
Singapore23:03 → 20:0314:030 min14:03145 min15 Oct
Sydney02:03 → 23:0313:590 min13:59155 min15 Oct
Suva03:03 → 00:0313:070 min13:07150 min15 Oct
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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