Ruling · Vivasvat Saptamī · 1907

Wednesday 17 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 144 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 Wednesday 17 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 Thursday 18 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 09:36 on Wed 17 Jul to 09:30 on Thu 18 Jul.

    1907-07-17T01:35:43Z → 1907-07-18T01:29:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 17th, 12:00–12:48 on the 18th.

    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 17th and 0 of 48 on the 18th.

    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 8642 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1907: Wednesday 17 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1907 falls on Wednesday 17 July. Saptamī runs from 09:36 on Wed 17 Jul to 09:30 on Thu 18 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1907/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 17 Jul
compat-drikpanchangComparison profileWed 17 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles17:36 → 17:3011:3548 min11:350 min17 Jul
Chicago19:36 → 19:3011:3248 min11:320 min17 Jul
Jersey City20:36 → 20:3011:3848 min11:380 min17 Jul
Port of Spain21:36 → 21:3011:4848 min11:480 min17 Jul
London01:36 → 01:3011:4248 min11:420 min17 Jul
Durban03:36 → 03:3011:3848 min11:380 min17 Jul
Dubai05:17 → 05:1111:4148 min11:420 min17 Jul
Delhi07:06 → 07:0012:0348 min12:030 min17 Jul
Kolkata07:06 → 07:0011:1848 min11:180 min17 Jul
Singapore08:36 → 08:3011:4648 min11:460 min17 Jul
Sydney11:36 → 11:3011:3748 min11:370 min17 Jul
Suva13:31 → 13:2511:430 min11:4348 min18 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

About Ahargaṇa