Ruling · Vivasvat Saptamī · 1950

Friday 21 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 146 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 Friday 21 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

Midday of Saturday 22 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 09:34 on Fri 21 Jul to 07:49 on Sat 22 Jul.

    1950-07-21T01:34:08Z → 1950-07-21T23:49:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 21st, 12:00–12:48 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 8763 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1950: Friday 21 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1950 falls on Friday 21 July. Saptamī runs from 09:34 on Fri 21 Jul to 07:49 on Sat 22 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1950/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 21 Jul
compat-drikpanchangComparison profileFri 21 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles18:34 → 16:4912:3548 min12:350 min21 Jul
Chicago20:34 → 18:4912:3348 min12:330 min21 Jul
Jersey City21:34 → 19:4912:3848 min12:380 min21 Jul
Port of Spain21:34 → 19:4911:4848 min11:480 min21 Jul
London02:34 → 00:4912:4248 min12:420 min21 Jul
Durban03:34 → 01:4911:3848 min11:380 min21 Jul
Dubai05:34 → 03:4912:0148 min12:010 min21 Jul
Delhi07:04 → 05:1912:0348 min12:030 min21 Jul
Kolkata07:04 → 05:1911:1948 min11:190 min21 Jul
Singapore09:04 → 07:1912:1748 min12:170 min21 Jul
Sydney11:34 → 09:4911:3848 min11:380 min21 Jul
Suva13:34 → 11:4911:490 min11:491 min22 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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