Ruling · Mahānavamī · 2049

Tuesday 5 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 386 minutes.

Decide it for

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Tuesday 5 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:04  11:52 madhyāhna ends
10:1610:4011:0411:2811:5212:1612:40

48 of 48 minutes covered

Midday of Wednesday 6 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:04  11:52 madhyāhna ends
10:1610:4011:0411:2811:5212:1612:40

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 04:38 on Tue 5 Oct to 02:23 on Wed 6 Oct.

    2049-10-04T20:38:15Z → 2049-10-05T18:22:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 5th, 11:04–11:52 on the 6th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 23149 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 2049: Tuesday 5 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 2049 falls on Tuesday 5 October. Navamī runs from 04:38 on Tue 5 Oct to 02:23 on Wed 6 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2049/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 5 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 5 Oct
compat-drikpanchangComparison profileTue 5 Oct
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/mahanavami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles13:38 → 11:2312:170 min12:170 min5 Oct
Chicago15:38 → 13:2312:150 min12:1548 min5 Oct
Jersey City16:38 → 14:2312:210 min12:2048 min5 Oct
Port of Spain16:38 → 14:2311:310 min11:3048 min5 Oct
London21:38 → 19:2312:250 min12:2448 min5 Oct
Durban22:38 → 20:2311:210 min11:2048 min5 Oct
Dubai00:38 → 22:2311:430 min11:4348 min5 Oct
Delhi02:08 → 23:5311:460 min11:4548 min5 Oct
Kolkata02:08 → 23:5311:010 min11:0148 min5 Oct
Singapore04:38 → 02:2312:290 min12:2948 min5 Oct
Sydney07:38 → 05:2312:200 min12:2048 min5 Oct
Suva08:38 → 06:2311:310 min11:3148 min5 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahanavami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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