Ruling · Mitra Saptamī · 1977

Friday 16 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 263 minutes.

Decide it for

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 Friday 16 December

Taken. The only midday Saptamī reaches.

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

48 of 48 minutes covered

Midday of Saturday 17 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 07:27 on Fri 16 Dec to 06:41 on Sat 17 Dec.

    1977-12-15T23:26:47Z → 1977-12-16T22:40:58Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 16th, 11:50–12:38 on the 17th.

    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 16th and 0 of 48 on the 17th.

    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 15771 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1977: Friday 16 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1977 falls on Friday 16 December. Saptamī runs from 07:27 on Fri 16 Dec to 06:41 on Sat 17 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1977/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 16 Dec
compat-drikpanchangComparison profileFri 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles15:27 → 14:4111:240 min11:2548 min16 Dec
Chicago17:27 → 16:4111:220 min11:2248 min16 Dec
Jersey City18:27 → 17:4111:280 min11:2848 min16 Dec
Port of Spain19:27 → 18:4111:370 min11:3848 min16 Dec
London23:27 → 22:4111:320 min11:3248 min16 Dec
Durban01:27 → 00:4111:270 min11:2848 min16 Dec
Dubai03:27 → 02:4111:500 min11:5048 min16 Dec
Delhi04:57 → 04:1111:520 min11:5348 min16 Dec
Kolkata04:57 → 04:1111:080 min11:0848 min16 Dec
Singapore06:57 → 06:1112:060 min12:0648 min16 Dec
Sydney10:27 → 09:4112:260 min12:2748 min16 Dec
Suva11:27 → 10:4111:370 min11:3848 min16 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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