Ruling · Mahānavamī · 2020

Saturday 24 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 86 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 Saturday 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 Sunday 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 09:29 on Sat 24 Oct to 10:12 on Sun 25 Oct.

    2020-10-24T01:29:19Z → 2020-10-25T02:12:17Z

  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 5140 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2020: Saturday 24 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2020 falls on Saturday 24 October. Navamī runs from 09:29 on Sat 24 Oct to 10:12 on Sun 25 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2020/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 24 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 24 Oct
compat-drikpanchangComparison profileSat 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles18:29 → 19:1212:1348 min12:130 min24 Oct
Chicago20:29 → 21:1212:1048 min12:100 min24 Oct
Jersey City21:29 → 22:1212:1648 min12:160 min24 Oct
Port of Spain21:29 → 22:1211:2648 min11:260 min24 Oct
London02:29 → 02:1212:2048 min11:200 min24 Oct
Durban03:29 → 04:1211:1648 min11:160 min24 Oct
Dubai05:29 → 06:1211:3948 min11:390 min24 Oct
Delhi06:59 → 07:4211:4148 min11:410 min24 Oct
Kolkata06:59 → 07:4210:5748 min10:560 min24 Oct
Singapore09:29 → 10:1212:2548 min12:250 min24 Oct
Sydney12:29 → 13:1212:1634 min12:1648 min24 Oct
Suva13:29 → 14:1211:270 min11:2748 min25 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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