Ruling · Mitra Saptamī · 1980

Sunday 14 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 598 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 13 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

0 of 48 minutes covered

Midday of Sunday 14 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 23:49 on Sat 13 Dec to 22:34 on Sun 14 Dec.

    1980-12-13T15:49:19Z → 1980-12-14T14:34:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 13th, 11:49–12:37 on the 14th.

    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 13th and 48 of 48 on the 14th.

    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 35858 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1980: Sunday 14 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1980 falls on Sunday 14 December. Saptamī runs from 23:49 on Sat 13 Dec to 22:34 on Sun 14 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1980/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 14 Dec
Ahargaṇa, classicalDisc centre, no refractionSun 14 Dec
compat-drikpanchangComparison profileSun 14 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles07:49 → 06:3411:2348 min11:240 min13 Dec
Chicago09:49 → 08:3411:2148 min11:210 min13 Dec
Jersey City10:49 → 09:3411:2748 min11:270 min13 Dec
Port of Spain11:49 → 10:3411:3635 min11:370 min13 Dec
London15:49 → 14:3411:310 min11:3148 min14 Dec
Durban17:49 → 16:3411:260 min11:2748 min14 Dec
Dubai19:49 → 18:3411:490 min11:4948 min14 Dec
Delhi21:19 → 20:0411:510 min11:5248 min14 Dec
Kolkata21:19 → 20:0411:070 min11:0748 min14 Dec
Singapore23:19 → 22:0412:050 min12:0548 min14 Dec
Sydney02:49 → 01:3412:250 min12:2648 min14 Dec
Suva03:49 → 02:3411:360 min11:3748 min14 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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