Ruling · Mitra Saptamī · 2011

Thursday 1 December

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 356 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 1 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:05  11:53 madhyāhna ends
10:1710:4111:0511:2911:5312:1712:41

48 of 48 minutes covered

Midday of Friday 2 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:05  11:53 madhyāhna ends
10:1710:4111:0511:2911:5312:1712:41

0 of 48 minutes covered

Saptamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 04:16 on Thu 1 Dec to 05:09 on Fri 2 Dec.

    2011-11-30T20:15:45Z → 2011-12-01T21:09:28Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 1st, 11:05–11:53 on the 2nd.

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

  3. 03

    Rule

    Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.

    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 21333 s

  5. 05

    Ruling

    Mitra Saptamī, Daqing, 2011: Thursday 1 December.

    confidence: determinate

Say it like this

In Daqing, Mitra Saptamī 2011 falls on Thursday 1 December. Saptamī runs from 04:16 on Thu 1 Dec to 05:09 on Fri 2 Dec and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2011/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 1 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 1 Dec
compat-drikpanchangComparison profileThu 1 Dec
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/mitra-saptami · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Saptamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 7 Mitra saptami (purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSaptamīMadhyāhna 30thCoveredMadhyāhna 1stCoveredRuled
Los Angeles12:16 → 13:0911:180 min11:1848 min1 Dec
Chicago14:16 → 15:0911:150 min11:1548 min1 Dec
Jersey City15:16 → 16:0911:210 min11:2148 min1 Dec
Port of Spain16:16 → 17:0911:310 min11:3148 min1 Dec
London20:16 → 21:0911:250 min11:2548 min1 Dec
Durban22:16 → 23:0911:210 min11:2148 min1 Dec
Dubai00:16 → 01:0911:430 min11:4448 min1 Dec
Delhi01:46 → 02:3911:450 min11:4648 min1 Dec
Kolkata01:46 → 02:3911:010 min11:0148 min1 Dec
Singapore04:16 → 05:0912:290 min12:2948 min1 Dec
Sydney07:16 → 08:0912:200 min12:2048 min1 Dec
Suva09:16 → 10:0912:310 min12:3148 min1 Dec
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mitra-saptami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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