Ruling · Mitra Saptamī · 2031

Saturday 20 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 483 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 Friday 19 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Saturday 20 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 22:34 on Fri 19 Dec to 20:43 on Sat 20 Dec.

    2031-12-19T14:33:46Z → 2031-12-20T12:42:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 19th, 11:51–12:39 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 28989 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 2031: Saturday 20 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 2031 falls on Saturday 20 December. Saptamī runs from 22:34 on Fri 19 Dec to 20:43 on Sat 20 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 20 Dec
compat-drikpanchangComparison profileSat 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles06:34 → 04:4311:2648 min11:270 min19 Dec
Chicago08:34 → 06:4311:2448 min11:240 min19 Dec
Jersey City09:34 → 07:4311:2948 min11:300 min19 Dec
Port of Spain10:34 → 08:4311:3948 min11:400 min19 Dec
London14:34 → 12:4311:330 min11:3448 min20 Dec
Durban16:34 → 14:4311:290 min11:2948 min20 Dec
Dubai18:34 → 16:4311:520 min11:5248 min20 Dec
Delhi20:04 → 18:1311:540 min11:5448 min20 Dec
Kolkata20:04 → 18:1311:090 min11:1048 min20 Dec
Singapore22:34 → 20:4312:370 min12:3848 min20 Dec
Sydney01:34 → 23:4312:280 min12:2848 min20 Dec
Suva02:34 → 00:4311:390 min11:4048 min20 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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