Ruling · Mitra Saptamī · 2037

Sunday 13 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 140 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 13 December

Taken. The only midday Saptamī reaches.

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

48 of 48 minutes covered

Midday of Monday 14 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 07:18 on Sun 13 Dec to 09:29 on Mon 14 Dec.

    2037-12-12T23:17:49Z → 2037-12-14T01:28:58Z

  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 48 of 48 minutes on the 13th and 0 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 8386 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 2037: Sunday 13 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 2037 falls on Sunday 13 December. Saptamī runs from 07:18 on Sun 13 Dec to 09:29 on Mon 14 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2037/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Dec
Ahargaṇa, classicalDisc centre, no refractionSun 13 Dec
compat-drikpanchangComparison profileSun 13 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 12thCoveredMadhyāhna 14thCoveredRuled
Los Angeles15:18 → 17:2911:230 min11:240 min13 Dec
Chicago17:18 → 19:2911:200 min11:210 min13 Dec
Jersey City18:18 → 20:2911:260 min11:270 min13 Dec
Port of Spain19:18 → 21:2911:360 min11:370 min13 Dec
London23:18 → 01:2911:300 min11:310 min13 Dec
Durban01:18 → 03:2911:260 min11:270 min13 Dec
Dubai03:18 → 05:2911:480 min11:490 min13 Dec
Delhi04:48 → 06:5911:510 min11:520 min13 Dec
Kolkata04:48 → 06:5911:060 min11:070 min13 Dec
Singapore07:18 → 09:2912:340 min12:350 min13 Dec
Sydney10:18 → 12:2912:250 min12:263 min13 Dec
Suva11:18 → 13:2911:360 min11:3748 min13 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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