Ruling · Mahānavamī · 2069

Thursday 24 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 416 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Thursday 24 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

48 of 48 minutes covered

Midday of Friday 25 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

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 04:04 on Thu 24 Oct to 03:40 on Fri 25 Oct.

    2069-10-23T20:04:09Z → 2069-10-24T19:40:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 24th, 11:00–11:48 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 24949 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 2069: Thursday 24 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 2069 falls on Thursday 24 October. Navamī runs from 04:04 on Thu 24 Oct to 03:40 on Fri 25 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2069/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 24 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 24 Oct
compat-drikpanchangComparison profileThu 24 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles13:04 → 12:4012:130 min12:1327 min24 Oct
Chicago15:04 → 14:4012:110 min12:1148 min24 Oct
Jersey City16:04 → 15:4012:160 min12:1648 min24 Oct
Port of Spain16:04 → 15:4011:260 min11:2648 min24 Oct
London21:04 → 20:4012:200 min12:2048 min24 Oct
Durban22:04 → 21:4011:170 min11:1648 min24 Oct
Dubai00:04 → 23:4011:390 min11:3948 min24 Oct
Delhi01:34 → 01:1011:410 min11:4148 min24 Oct
Kolkata01:34 → 01:1010:570 min10:5748 min24 Oct
Singapore04:04 → 03:4012:250 min12:2548 min24 Oct
Sydney07:04 → 06:4012:160 min12:1648 min24 Oct
Suva08:04 → 07:4011:270 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

About Ahargaṇa