Ruling · Mitra Saptamī · 2099

Friday 18 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 166 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 18 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

Midday of Saturday 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 06:45 on Fri 18 Dec to 09:05 on Sat 19 Dec.

    2099-12-17T22:45:13Z → 2099-12-19T01:05:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 18th, 11:51–12:39 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 9960 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 2099: Friday 18 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 2099 falls on Friday 18 December. Saptamī runs from 06:45 on Fri 18 Dec to 09:05 on Sat 19 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2099/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 19thCoveredRuled
Los Angeles14:45 → 17:0511:260 min11:270 min18 Dec
Chicago16:45 → 19:0511:230 min11:240 min18 Dec
Jersey City17:45 → 20:0511:290 min11:300 min18 Dec
Port of Spain18:45 → 21:0511:390 min11:400 min18 Dec
London22:45 → 01:0511:330 min11:340 min18 Dec
Durban00:45 → 03:0511:280 min11:290 min18 Dec
Dubai02:45 → 05:0511:510 min11:520 min18 Dec
Delhi04:15 → 06:3511:530 min11:540 min18 Dec
Kolkata04:15 → 06:3511:090 min11:100 min18 Dec
Singapore06:45 → 09:0512:370 min12:380 min18 Dec
Sydney09:45 → 12:0512:270 min12:280 min18 Dec
Suva10:45 → 13:0511:390 min11:4048 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

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