Ruling · Vivasvat Saptamī · 1900

Wednesday 4 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 236 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 Tuesday 3 July

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

0 of 48 minutes covered

Midday of Wednesday 4 July

Taken. The only midday Saptamī reaches.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

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 16:47 on Tue 3 Jul to 19:09 on Wed 4 Jul.

    1900-07-03T08:41:55Z → 1900-07-04T11:03:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 3rd, 12:03–12:51 on the 4th.

    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 3rd and 48 of 48 on the 4th.

    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 14161 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1900: Wednesday 4 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1900 falls on Wednesday 4 July. Saptamī runs from 16:47 on Tue 3 Jul to 19:09 on Wed 4 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1900/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 4 Jul
compat-drikpanchangComparison profileWed 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles00:42 → 03:0411:3348 min11:330 min3 Jul
Chicago02:42 → 05:0411:3048 min11:310 min3 Jul
Jersey City03:42 → 06:0411:3648 min11:360 min3 Jul
Port of Spain04:42 → 07:0411:4648 min11:460 min3 Jul
London08:42 → 11:0411:4048 min11:400 min3 Jul
Durban10:12 → 12:3411:0648 min11:0648 min3 Jul
Dubai12:23 → 14:4511:405 min11:4048 min3 Jul
Delhi14:03 → 16:2511:520 min11:5248 min4 Jul
Kolkata14:03 → 16:2511:070 min11:0848 min4 Jul
Singapore15:37 → 17:5911:390 min11:4048 min4 Jul
Sydney18:42 → 21:0411:350 min11:3548 min4 Jul
Suva20:37 → 22:5911:410 min11:4148 min4 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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