Ruling · Vivasvat Saptamī · 1923

Friday 20 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 590 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 19 July

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Friday 20 July

Taken. The only midday Saptamī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

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 00:44 on Fri 20 Jul to 22:38 on Fri 20 Jul.

    1923-07-19T16:43:31Z → 1923-07-20T14:37:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 19th, 12:00–12:48 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. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 35371 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1923: Friday 20 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1923 falls on Friday 20 July. Saptamī runs from 00:44 on Fri 20 Jul to 22:38 on Fri 20 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1923/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 20 Jul
compat-drikpanchangComparison profileFri 20 Jul
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/vivasvat-saptami · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Saptamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 7 Vivasvat saptami (purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSaptamīMadhyāhna 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles08:44 → 06:3811:3548 min11:350 min19 Jul
Chicago11:44 → 09:3812:3248 min12:320 min19 Jul
Jersey City12:44 → 10:3812:3843 min12:380 min19 Jul
Port of Spain12:44 → 10:3811:480 min11:480 min20 Jul
London17:44 → 15:3812:420 min12:4248 min20 Jul
Durban18:44 → 16:3811:380 min11:3848 min20 Jul
Dubai20:44 → 18:3812:010 min12:0148 min20 Jul
Delhi22:14 → 20:0812:030 min12:0348 min20 Jul
Kolkata22:14 → 20:0811:180 min11:1948 min20 Jul
Singapore23:44 → 21:3811:470 min11:4748 min20 Jul
Sydney02:44 → 00:3811:370 min11:3748 min20 Jul
Suva04:44 → 02:3811:480 min11:4848 min20 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vivasvat-saptami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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