Ruling · Mitra Saptamī · 1993

Monday 20 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 158 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 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 Monday 20 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 15:17 on Sun 19 Dec to 17:16 on Mon 20 Dec.

    1993-12-19T07:17:24Z → 1993-12-20T09:16:05Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 19th, 11:52–12:40 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 9495 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1993: Monday 20 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1993 falls on Monday 20 December. Saptamī runs from 15:17 on Sun 19 Dec to 17:16 on Mon 20 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1993/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 20 Dec
compat-drikpanchangComparison profileMon 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 Angeles23:17 → 01:1611:2648 min11:270 min19 Dec
Chicago01:17 → 03:1611:2448 min11:240 min19 Dec
Jersey City02:17 → 04:1611:3048 min11:300 min19 Dec
Port of Spain03:17 → 05:1611:3948 min11:400 min19 Dec
London07:17 → 09:1611:3448 min11:340 min19 Dec
Durban09:17 → 11:1611:2948 min11:300 min19 Dec
Dubai11:17 → 13:1611:5248 min11:5248 min19 Dec
Delhi12:47 → 14:4611:540 min11:5548 min20 Dec
Kolkata12:47 → 14:4611:100 min11:1048 min20 Dec
Singapore15:17 → 17:1612:380 min12:3848 min20 Dec
Sydney18:17 → 20:1612:280 min12:2948 min20 Dec
Suva19:17 → 21:1611:390 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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