Ruling · Mitra Saptamī · 2086

Friday 13 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 12 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
Saptamī begins 12:49:24
11:0011:2411:4812:1212:3613:0013:24

0 of 48 minutes covered

Midday of Friday 13 December

Taken. Saptamī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:48  12:36 madhyāhna ends
Saptamī ends 11:15:36
11:0011:2411:4812:1212:3613:0013:24

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 12:49 on Thu 12 Dec to 11:16 on Fri 13 Dec.

    2086-12-12T04:49:24Z → 2086-12-13T03:15:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 12th, 11:48–12:36 on the 13th.

    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 12th and 0 of 48 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 805 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 2086: Friday 13 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 2086 falls on Friday 13 December. Saptamī runs from 12:49 on Thu 12 Dec to 11:16 on Fri 13 Dec, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2086/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 13 Dec
compat-drikpanchangComparison profileThu 12 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles20:49 → 19:1611:2348 min11:240 min12 Dec
Chicago22:49 → 21:1611:2148 min11:210 min12 Dec
Jersey City23:49 → 22:1611:2648 min11:270 min12 Dec
Port of Spain00:49 → 23:1611:3648 min11:370 min12 Dec
London04:49 → 03:1611:3048 min11:310 min12 Dec
Durban06:49 → 05:1611:2648 min11:260 min12 Dec
Dubai08:49 → 07:1611:4948 min11:490 min12 Dec
Delhi10:19 → 08:4611:5148 min11:510 min12 Dec
Kolkata10:19 → 08:4611:0648 min11:070 min12 Dec
Singapore12:49 → 11:1612:3533 min12:350 min12 Dec
Sydney15:49 → 14:1612:250 min12:2648 min13 Dec
Suva16:49 → 15:1611:360 min11:3748 min13 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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