Ruling · Mitra Saptamī · 1988

Thursday 15 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 435 minutes.

Decide it for

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 15 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Midday of Friday 16 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 04:35 on Thu 15 Dec to 02:39 on Fri 16 Dec.

    1988-12-14T20:34:45Z → 1988-12-15T18:38:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:50–12:38 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 26071 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1988: Thursday 15 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1988 falls on Thursday 15 December. Saptamī runs from 04:35 on Thu 15 Dec to 02:39 on Fri 16 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1988/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 15 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 15 Dec
compat-drikpanchangComparison profileThu 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles12:35 → 10:3911:240 min11:240 min15 Dec
Chicago14:35 → 12:3911:220 min11:2248 min15 Dec
Jersey City15:35 → 13:3911:270 min11:2848 min15 Dec
Port of Spain16:35 → 14:3911:370 min11:3748 min15 Dec
London20:35 → 18:3911:310 min11:3248 min15 Dec
Durban22:35 → 20:3911:270 min11:2748 min15 Dec
Dubai00:35 → 22:3911:490 min11:5048 min15 Dec
Delhi02:05 → 00:0911:520 min11:5248 min15 Dec
Kolkata02:05 → 00:0911:070 min11:0848 min15 Dec
Singapore04:35 → 02:3912:350 min12:3648 min15 Dec
Sydney07:35 → 05:3912:260 min12:2648 min15 Dec
Suva08:35 → 06:3911:370 min11:3748 min15 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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