Ruling · Vivasvat Saptamī · 1990

Friday 29 June

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 235 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 28 June

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:57  13:45 madhyāhna ends
12:0912:3312:5713:2113:4514:0914:33

0 of 48 minutes covered

Midday of Friday 29 June

Taken. The only midday Saptamī reaches.

madhyāhna begins 12:57  13:45 madhyāhna ends
12:0912:3312:5713:2113:4514:0914:33

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 17:40 on Thu 28 Jun to 18:28 on Fri 29 Jun.

    1990-06-28T08:39:54Z → 1990-06-29T09:28:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:57–13:45 on the 28th, 12:57–13:45 on the 29th.

    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 28th and 48 of 48 on the 29th.

    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 14081 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1990: Friday 29 June.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1990 falls on Friday 29 June. Saptamī runs from 17:40 on Thu 28 Jun to 18:28 on Fri 29 Jun and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1990/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 29 Jun
Ahargaṇa, classicalDisc centre, no refractionFri 29 Jun
compat-drikpanchangComparison profileFri 29 Jun
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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles01:40 → 02:2812:3248 min12:320 min28 Jun
Chicago03:40 → 04:2812:3048 min12:300 min28 Jun
Jersey City04:40 → 05:2812:3548 min12:360 min28 Jun
Port of Spain04:40 → 05:2811:4548 min11:450 min28 Jun
London09:40 → 10:2812:4048 min12:400 min28 Jun
Durban10:40 → 11:2811:3548 min11:350 min28 Jun
Dubai12:40 → 13:2811:586 min11:5848 min28 Jun
Delhi14:10 → 14:5812:000 min12:0048 min29 Jun
Kolkata14:10 → 14:5811:160 min11:1648 min29 Jun
Singapore16:40 → 17:2812:440 min12:4448 min29 Jun
Sydney18:40 → 19:2811:340 min11:3548 min29 Jun
Suva20:40 → 21:2811:450 min11:4648 min29 Jun
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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