Ruling · Mahānavamī · 2058

Saturday 26 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 25 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 Friday 25 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:00  11:48 madhyāhna ends
Navamī begins 12:12:32
10:1210:3611:0011:2411:4812:1212:36

0 of 48 minutes covered

Midday of Saturday 26 October

Taken. Navamī reaches neither midday; the rule takes the second day.

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 12:13 on Fri 25 Oct to 09:56 on Sat 26 Oct.

    2058-10-25T04:12:33Z → 2058-10-26T01:56:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 25th, 11:00–11:48 on the 26th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 0 of 48 on the 26th.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 1483 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 2058: Saturday 26 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 2058 falls on Saturday 26 October. Navamī runs from 12:13 on Fri 25 Oct to 09:56 on Sat 26 Oct, and reaches madhyāhna on neither day.

ahargana.org/daqing/festivals/2058/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 26 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 26 Oct
compat-drikpanchangComparison profileFri 25 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles21:13 → 18:5612:1348 min12:130 min25 Oct
Chicago23:13 → 20:5612:1048 min12:100 min25 Oct
Jersey City00:13 → 21:5612:1648 min12:160 min25 Oct
Port of Spain00:13 → 21:5611:2648 min11:260 min25 Oct
London05:13 → 02:5612:2048 min12:200 min25 Oct
Durban06:13 → 03:5611:1648 min11:160 min25 Oct
Dubai08:13 → 05:5611:3948 min11:390 min25 Oct
Delhi09:43 → 07:2611:4148 min11:410 min25 Oct
Kolkata09:43 → 07:2610:5748 min10:560 min25 Oct
Singapore12:13 → 09:5612:2548 min12:250 min25 Oct
Sydney15:13 → 12:5612:160 min12:1641 min26 Oct
Suva16:13 → 13:5611:270 min11:2648 min26 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