Ruling · Mitra Saptamī · 1910

Friday 9 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 167 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 8 December

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

Midday of Friday 9 December

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 15:23 on Thu 8 Dec to 15:21 on Fri 9 Dec.

    1910-12-08T07:23:16Z → 1910-12-09T07:20:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 8th, 11:46–12:34 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 10006 s

  5. 05

    Ruling

    Mitra Saptamī, Baoding, 1910: Friday 9 December.

    confidence: determinate

Say it like this

In Baoding, Mitra Saptamī 1910 falls on Friday 9 December. Saptamī runs from 15:23 on Thu 8 Dec to 15:21 on Fri 9 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1910/mitra-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 9 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 9 Dec
compat-drikpanchangComparison profileFri 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles23:23 → 23:2111:2148 min11:210 min8 Dec
Chicago01:23 → 01:2111:1848 min11:190 min8 Dec
Jersey City02:23 → 02:2111:2448 min11:240 min8 Dec
Port of Spain03:23 → 03:2111:3448 min11:340 min8 Dec
London07:23 → 07:2111:2848 min11:290 min8 Dec
Durban09:23 → 09:2111:2448 min11:240 min8 Dec
Dubai11:04 → 11:0211:2748 min11:280 min8 Dec
Delhi12:53 → 12:5111:490 min11:4948 min9 Dec
Kolkata12:53 → 12:5111:040 min11:0548 min9 Dec
Singapore14:23 → 14:2111:320 min11:3348 min9 Dec
Sydney17:23 → 17:2111:230 min11:2348 min9 Dec
Suva19:18 → 19:1611:290 min11:2948 min9 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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