Ruling · Vivasvat Saptamī · 1953

Saturday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 524 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 17 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 18 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 21:32 on Fri 17 Jul to 23:48 on Sat 18 Jul.

    1953-07-17T13:32:15Z → 1953-07-18T15:47:36Z

  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 0 of 48 minutes on the 17th and 48 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 31459 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1953: Saturday 18 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1953 falls on Saturday 18 July. Saptamī runs from 21:32 on Fri 17 Jul to 23:48 on Sat 18 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1953/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 18 Jul
compat-drikpanchangComparison profileSat 18 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 Angeles06:32 → 08:4812:3548 min12:350 min17 Jul
Chicago08:32 → 10:4812:3248 min12:320 min17 Jul
Jersey City09:32 → 11:4812:3848 min12:380 min17 Jul
Port of Spain09:32 → 11:4811:4848 min11:480 min17 Jul
London14:32 → 16:4812:420 min12:4248 min18 Jul
Durban15:32 → 17:4811:380 min11:3848 min18 Jul
Dubai17:32 → 19:4812:010 min12:0148 min18 Jul
Delhi19:02 → 21:1812:030 min12:0348 min18 Jul
Kolkata19:02 → 21:1811:180 min11:1948 min18 Jul
Singapore21:02 → 23:1812:170 min12:1748 min18 Jul
Sydney23:32 → 01:4811:370 min11:3748 min18 Jul
Suva01:32 → 03:4811:480 min11:4848 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