Ruling · Akṣaya Navamī (Amla Navami) · 2021

Friday 12 November

Boundaryin Daqing, under the Rashtriya Panchang method. Both forenoons qualify and the rule does not say which to take. Say “contested”.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two forenoons

One ghaṭī is 24 minutes. Pūrvāhṇa is first 5 of 15 day muhūrtas.

Forenoon of Friday 12 November

Taken. Both forenoons qualify; the rule is silent, and this one is covered longer.

06:38 sunrisepūrvāhṇa ends 09:48
Navamī begins 08:21:41
06:1407:0207:5008:3809:2610:14

87 of 191 minutes covered, the last 87

Forenoon of Saturday 13 November

Qualifies with 82 of 190 minutes. Not taken.

06:39 sunrisepūrvāhṇa ends 09:49
Navamī ends 08:01:37
06:1507:0307:5108:3909:2710:15

82 of 190 minutes covered, the first 82

Navamī presentPūrvāhṇa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 08:22 on Fri 12 Nov to 08:02 on Sat 13 Nov.

    2021-11-12T00:21:42Z → 2021-11-13T00:01:38Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:38–09:48 on the 12th, 06:39–09:49 on the 13th.

    purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during pūrvāhṇa. It covers 87 of 191 minutes on the 12th and 82 of 190 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 4945 s

  5. 05

    Ruling

    Akṣaya Navamī, Daqing, 2021: Friday 12 November.

    confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Akṣaya Navamī (Amla Navami) 2021 falls on Friday 12 November. Navamī runs from 08:22 on Fri 12 Nov to 08:02 on Sat 13 Nov and covers 87 of 191 minutes of pūrvāhṇa that forenoon. It also reaches the next forenoon for 82 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/daqing/festivals/2021/akshaya-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 12 Nov
compat-drikpanchangComparison profileFri 12 Nov
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/akshaya-navami · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Pūrvāhṇa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīSunrise 12thCoveredSunrise 13thCoveredRuled
Los Angeles16:22 → 16:0206:23209 min06:240 min12 Nov
Chicago18:22 → 18:0206:37198 min06:380 min12 Nov
Jersey City19:22 → 19:0206:40200 min06:410 min12 Nov
Port of Spain20:22 → 20:0206:01233 min06:010 min12 Nov
London00:22 → 00:0207:14180 min07:160 min12 Nov
Durban02:22 → 02:0204:54271 min04:530 min12 Nov
Dubai04:22 → 04:0206:34219 min06:340 min12 Nov
Delhi05:52 → 05:3206:42216 min06:420 min12 Nov
Kolkata05:52 → 05:3205:48218 min05:480 min12 Nov
Singapore08:22 → 08:0206:47146 min06:4774 min12 Nov
Sydney11:22 → 11:0205:460 min05:45276 min13 Nov
Suva12:22 → 12:0205:230 min05:23259 min13 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
akshaya-navami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa