Ruling · Mitra Saptamī · 1912

Sunday 15 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 15 December

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:49  12:37 madhyāhna ends
Saptamī begins 12:18:03
11:0111:2511:4912:1312:3713:0113:25

19 of 48 minutes covered, the last 19

Midday of Monday 16 December

Qualifies with 48 of 48 minutes. Not taken.

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

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 12:18 on Sun 15 Dec to 14:55 on Mon 16 Dec.

    1912-12-15T04:18:03Z → 1912-12-16T06:54:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:50–12:38 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 19 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

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1145 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1912: Sunday 15 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1912 falls on Sunday 15 December. Saptamī runs from 12:18 on Sun 15 Dec to 14:55 on Mon 16 Dec and covers 19 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1912/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 15 Dec
Ahargaṇa, classicalDisc centre, no refractionSun 15 Dec
compat-drikpanchangComparison profileSun 15 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 Angeles20:18 → 22:5511:2448 min11:250 min15 Dec
Chicago22:18 → 00:5511:2248 min11:220 min15 Dec
Jersey City23:18 → 01:5511:2848 min11:280 min15 Dec
Port of Spain00:18 → 02:5511:3748 min11:380 min15 Dec
London04:18 → 06:5511:3248 min11:320 min15 Dec
Durban06:18 → 08:5511:2748 min11:280 min15 Dec
Dubai07:59 → 10:3611:3148 min11:310 min15 Dec
Delhi09:48 → 12:2511:5248 min11:5332 min15 Dec
Kolkata09:48 → 12:2511:0848 min11:0848 min15 Dec
Singapore11:18 → 13:5511:3648 min11:3648 min15 Dec
Sydney14:18 → 16:5511:260 min11:2748 min16 Dec
Suva16:13 → 18:5011:320 min11:3348 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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