Ruling · Mahānavamī · 2031

Friday 24 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 547 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

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

Midday of Friday 24 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

48 of 48 minutes covered

Midday of Saturday 25 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

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 02:31 on Fri 24 Oct to 00:21 on Sat 25 Oct.

    2031-10-23T18:30:53Z → 2031-10-24T16:21:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 24th, 11:38–12:26 on the 25th.

    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 24th and 0 of 48 on the 25th.

    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 32835 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2031: Friday 24 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2031 falls on Friday 24 October. Navamī runs from 02:31 on Fri 24 Oct to 00:21 on Sat 25 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 24 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 24 Oct
compat-drikpanchangComparison profileFri 24 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/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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles11:31 → 09:2112:1348 min12:130 min23 Oct
Chicago13:31 → 11:2112:110 min12:100 min24 Oct
Jersey City14:31 → 12:2112:160 min12:165 min24 Oct
Port of Spain14:31 → 12:2111:260 min11:2648 min24 Oct
London19:31 → 17:2112:200 min12:2048 min24 Oct
Durban20:31 → 18:2111:160 min11:1648 min24 Oct
Dubai22:31 → 20:2111:390 min11:3948 min24 Oct
Delhi00:01 → 21:5111:410 min11:4148 min24 Oct
Kolkata00:01 → 21:5110:570 min10:5748 min24 Oct
Singapore02:31 → 00:2112:250 min12:2548 min24 Oct
Sydney05:31 → 03:2112:160 min12:1648 min24 Oct
Suva06:31 → 04:2111:270 min11:2748 min24 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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