Ruling · Mahānavamī · 1973

Friday 5 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 91 minutes.

Decide it for

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 5 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

48 of 48 minutes covered

Midday of Saturday 6 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

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 07:49 on Fri 5 Oct to 10:11 on Sat 6 Oct.

    1973-10-04T23:49:24Z → 1973-10-06T02:11:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 5th, 11:42–12:30 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 5465 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 1973: Friday 5 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 1973 falls on Friday 5 October. Navamī runs from 07:49 on Fri 5 Oct to 10:11 on Sat 6 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 5 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 5 Oct
compat-drikpanchangComparison profileFri 5 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 4thCoveredMadhyāhna 6thCoveredRuled
Los Angeles16:49 → 19:1112:170 min12:170 min5 Oct
Chicago18:49 → 21:1112:150 min12:140 min5 Oct
Jersey City19:49 → 22:1112:210 min12:200 min5 Oct
Port of Spain19:49 → 22:1111:310 min11:300 min5 Oct
London00:49 → 03:1112:250 min12:240 min5 Oct
Durban01:49 → 04:1111:210 min11:200 min5 Oct
Dubai03:49 → 06:1111:430 min11:430 min5 Oct
Delhi05:19 → 07:4111:460 min11:450 min5 Oct
Kolkata05:19 → 07:4111:010 min11:010 min5 Oct
Singapore07:19 → 09:4111:590 min11:590 min5 Oct
Sydney09:49 → 12:1111:200 min11:2048 min5 Oct
Suva11:49 → 14:1111:310 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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