Ruling · Mitra Saptamī · 1909

Sunday 19 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 636 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Saturday 18 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Sunday 19 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 00:59 on Sun 19 Dec to 23:15 on Sun 19 Dec.

    1909-12-18T16:58:36Z → 1909-12-19T15:14:58Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 18th, 11:51–12:39 on the 19th.

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

  3. 03

    Rule

    Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.

    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 38158 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1909: Sunday 19 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1909 falls on Sunday 19 December. Saptamī runs from 00:59 on Sun 19 Dec to 23:15 on Sun 19 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1909/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 19 Dec
Ahargaṇa, classicalDisc centre, no refractionSun 19 Dec
compat-drikpanchangComparison profileSun 19 Dec
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/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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles08:59 → 07:1511:2648 min11:260 min18 Dec
Chicago10:59 → 09:1511:2348 min11:240 min18 Dec
Jersey City11:59 → 10:1511:2918 min11:290 min18 Dec
Port of Spain12:59 → 11:1511:390 min11:390 min19 Dec
London16:59 → 15:1511:330 min11:3448 min19 Dec
Durban18:59 → 17:1511:280 min11:2948 min19 Dec
Dubai20:40 → 18:5611:320 min11:3348 min19 Dec
Delhi22:29 → 20:4511:530 min11:5448 min19 Dec
Kolkata22:29 → 20:4511:090 min11:0948 min19 Dec
Singapore23:59 → 22:1511:370 min11:3748 min19 Dec
Sydney02:59 → 01:1511:280 min11:2848 min19 Dec
Suva04:54 → 03:1011:340 min11:3448 min19 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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