Ruling · Mitra Saptamī · 1966

Monday 19 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 78 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 Sunday 18 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Monday 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 13:57 on Sun 18 Dec to 16:23 on Mon 19 Dec.

    1966-12-18T05:56:55Z → 1966-12-19T08:22:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 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 4708 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1966: Monday 19 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1966 falls on Monday 19 December. Saptamī runs from 13:57 on Sun 18 Dec to 16:23 on Mon 19 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1966/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 19 Dec
compat-drikpanchangComparison profileMon 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 Angeles21:57 → 00:2311:2648 min11:260 min18 Dec
Chicago23:57 → 02:2311:2348 min11:240 min18 Dec
Jersey City00:57 → 03:2311:2948 min11:290 min18 Dec
Port of Spain01:57 → 04:2311:3948 min11:390 min18 Dec
London05:57 → 08:2311:3348 min11:330 min18 Dec
Durban07:57 → 10:2311:2848 min11:290 min18 Dec
Dubai09:57 → 12:2311:5148 min11:5231 min18 Dec
Delhi11:27 → 13:5311:5348 min11:5448 min18 Dec
Kolkata11:27 → 13:5311:0930 min11:0948 min18 Dec
Singapore13:27 → 15:5312:070 min12:0748 min19 Dec
Sydney15:57 → 18:2311:270 min11:2848 min19 Dec
Suva17:57 → 20:2311:390 min11:3948 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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