Ruling · Mitra Saptamī · 2015

Friday 18 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 18 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 Thursday 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

Midday of Friday 18 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
Saptamī ends 12:08:50
11:0211:2611:5012:1412:3813:0213:26

18 of 48 minutes covered, the first 18

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 13:49 on Thu 17 Dec to 12:09 on Fri 18 Dec.

    2015-12-17T05:48:56Z → 2015-12-18T04:08:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 17th, 11:50–12:38 on the 18th.

    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 17th and 18 of 48 on the 18th.

    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 1106 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 2015: Friday 18 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 2015 falls on Friday 18 December. Saptamī runs from 13:49 on Thu 17 Dec to 12:09 on Fri 18 Dec and covers 18 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/2015/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 18 Dec
compat-drikpanchangComparison profileFri 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles21:49 → 20:0911:2548 min11:260 min17 Dec
Chicago23:49 → 22:0911:2348 min11:230 min17 Dec
Jersey City00:49 → 23:0911:2848 min11:290 min17 Dec
Port of Spain01:49 → 00:0911:3848 min11:390 min17 Dec
London05:49 → 04:0911:3248 min11:330 min17 Dec
Durban07:49 → 06:0911:2848 min11:280 min17 Dec
Dubai09:49 → 08:0911:5148 min11:510 min17 Dec
Delhi11:19 → 09:3911:5348 min11:530 min17 Dec
Kolkata11:19 → 09:3911:0837 min11:090 min17 Dec
Singapore13:49 → 12:0912:360 min12:370 min18 Dec
Sydney16:49 → 15:0912:270 min12:2748 min18 Dec
Suva18:49 → 17:0912:380 min12:3948 min18 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

About Ahargaṇa