Ruling · Mitra Saptamī · 1931

Wednesday 16 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 167 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 Tuesday 15 December

Saptamī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Wednesday 16 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 15:23 on Tue 15 Dec to 17:29 on Wed 16 Dec.

    1931-12-15T07:23:25Z → 1931-12-16T09:28:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 9997 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1931: Wednesday 16 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1931 falls on Wednesday 16 December. Saptamī runs from 15:23 on Tue 15 Dec to 17:29 on Wed 16 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1931/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 16 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 16 Dec
compat-drikpanchangComparison profileWed 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 Angeles23:23 → 01:2911:2448 min11:240 min15 Dec
Chicago01:23 → 03:2911:2248 min11:220 min15 Dec
Jersey City02:23 → 04:2911:2748 min11:280 min15 Dec
Port of Spain03:23 → 05:2911:3748 min11:370 min15 Dec
London07:23 → 09:2911:3148 min11:320 min15 Dec
Durban09:23 → 11:2911:2748 min11:272 min15 Dec
Dubai11:23 → 13:2911:5048 min11:5048 min15 Dec
Delhi12:53 → 14:5911:520 min11:5248 min16 Dec
Kolkata12:53 → 14:5911:070 min11:0848 min16 Dec
Singapore14:23 → 16:2911:350 min11:3648 min16 Dec
Sydney17:23 → 19:2911:260 min11:2648 min16 Dec
Suva19:23 → 21:2911:370 min11:3748 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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