Ruling · Mitra Saptamī · 2017

Saturday 25 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 30 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 Saturday 25 November

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:03  11:51 madhyāhna ends
Saptamī begins 10:27:50
10:1510:3911:0311:2711:5112:1512:39

48 of 48 minutes covered

Midday of Sunday 26 November

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:03  11:51 madhyāhna ends
Saptamī ends 12:21:15
10:1510:3911:0311:2711:5112:1512:39

48 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 10:28 on Sat 25 Nov to 12:21 on Sun 26 Nov.

    2017-11-25T02:27:51Z → 2017-11-26T04:21:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 25th, 11:03–11:51 on the 26th.

    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 25th and 48 of 48 on the 26th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1811 s

  5. 05

    Ruling

    Mitra Saptamī, Daqing, 2017: Saturday 25 November.

    confidence: determinate

Say it like this

In Daqing, Mitra Saptamī 2017 falls on Saturday 25 November. Saptamī runs from 10:28 on Sat 25 Nov to 12:21 on Sun 26 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/daqing/festivals/2017/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 25 Nov
compat-drikpanchangComparison profileSat 25 Nov
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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles18:28 → 20:2111:1648 min11:160 min25 Nov
Chicago20:28 → 22:2111:1448 min11:140 min25 Nov
Jersey City21:28 → 23:2111:1948 min11:200 min25 Nov
Port of Spain22:28 → 00:2111:2948 min11:290 min25 Nov
London02:28 → 04:2111:2348 min11:240 min25 Nov
Durban04:28 → 06:2111:1948 min11:190 min25 Nov
Dubai06:28 → 08:2111:4248 min11:420 min25 Nov
Delhi07:58 → 09:5111:4448 min11:440 min25 Nov
Kolkata07:58 → 09:5110:5948 min11:000 min25 Nov
Singapore10:28 → 12:2112:2848 min12:280 min25 Nov
Sydney13:28 → 15:2112:180 min12:1948 min26 Nov
Suva15:28 → 17:2112:290 min12:3048 min26 Nov
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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