Ruling · Vivasvat Saptamī · 1999

Monday 19 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 469 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 Monday 19 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 Tuesday 20 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 02:59 on Mon 19 Jul to 04:11 on Tue 20 Jul.

    1999-07-18T18:58:45Z → 1999-07-19T20:10:52Z

  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 48 of 48 minutes on the 19th and 0 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 28162 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1999: Monday 19 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1999 falls on Monday 19 July. Saptamī runs from 02:59 on Mon 19 Jul to 04:11 on Tue 20 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1999/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 19 Jul
compat-drikpanchangComparison profileMon 19 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles11:59 → 13:1112:3548 min12:3536 min18 Jul
Chicago13:59 → 15:1112:330 min12:3348 min19 Jul
Jersey City14:59 → 16:1112:380 min12:3848 min19 Jul
Port of Spain14:59 → 16:1111:480 min11:4848 min19 Jul
London19:59 → 21:1112:420 min12:4248 min19 Jul
Durban20:59 → 22:1111:380 min11:3848 min19 Jul
Dubai22:59 → 00:1112:010 min12:0148 min19 Jul
Delhi00:29 → 01:4112:030 min12:0348 min19 Jul
Kolkata00:29 → 01:4111:190 min11:1948 min19 Jul
Singapore02:59 → 04:1112:470 min12:4748 min19 Jul
Sydney04:59 → 06:1111:370 min11:3848 min19 Jul
Suva06:59 → 08:1111:490 min11:4948 min19 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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