Ruling · Vivasvat Saptamī · 1983

Saturday 16 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 637 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 15 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

Midday of Saturday 16 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 01:04 on Sat 16 Jul to 23:25 on Sat 16 Jul.

    1983-07-15T17:04:10Z → 1983-07-16T15:24:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 15th, 12:00–12:48 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 38211 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1983: Saturday 16 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1983 falls on Saturday 16 July. Saptamī runs from 01:04 on Sat 16 Jul to 23:25 on Sat 16 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 16 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 16 Jul
compat-drikpanchangComparison profileSat 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles10:04 → 08:2512:3548 min12:350 min15 Jul
Chicago12:04 → 10:2512:3248 min12:320 min15 Jul
Jersey City13:04 → 11:2512:3822 min12:380 min15 Jul
Port of Spain13:04 → 11:2511:480 min11:480 min16 Jul
London18:04 → 16:2512:420 min12:4248 min16 Jul
Durban19:04 → 17:2511:380 min11:3848 min16 Jul
Dubai21:04 → 19:2512:000 min12:0148 min16 Jul
Delhi22:34 → 20:5512:030 min12:0348 min16 Jul
Kolkata22:34 → 20:5511:180 min11:1848 min16 Jul
Singapore01:04 → 23:2512:460 min12:4748 min16 Jul
Sydney03:04 → 01:2511:370 min11:3748 min16 Jul
Suva05:04 → 03:2511:480 min11:4848 min16 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