Ruling · Vivasvat Saptamī · 1988

Thursday 21 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 401 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 20 July

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 13:00  13:48 madhyāhna ends
12:1212:3613:0013:2413:4814:1214:36

0 of 48 minutes covered

Midday of Thursday 21 July

Taken. The only midday Saptamī reaches.

madhyāhna begins 13:00  13:48 madhyāhna ends
12:1212:3613:0013:2413:4814:1214:36

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 20:29 on Wed 20 Jul to 22:28 on Thu 21 Jul.

    1988-07-20T11:29:06Z → 1988-07-21T13:28:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 13:00–13:48 on the 20th, 13:00–13:48 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 24051 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1988: Thursday 21 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1988 falls on Thursday 21 July. Saptamī runs from 20:29 on Wed 20 Jul to 22:28 on Thu 21 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1988/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 21 Jul
compat-drikpanchangComparison profileThu 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles04:29 → 06:2812:3548 min12:350 min20 Jul
Chicago06:29 → 08:2812:3348 min12:330 min20 Jul
Jersey City07:29 → 09:2812:3848 min12:380 min20 Jul
Port of Spain07:29 → 09:2811:4848 min11:480 min20 Jul
London12:29 → 14:2812:4248 min12:4248 min20 Jul
Durban13:29 → 15:2811:380 min11:3848 min21 Jul
Dubai15:29 → 17:2812:010 min12:0148 min21 Jul
Delhi16:59 → 18:5812:030 min12:0348 min21 Jul
Kolkata16:59 → 18:5811:190 min11:1948 min21 Jul
Singapore19:29 → 21:2812:470 min12:4748 min21 Jul
Sydney21:29 → 23:2811:380 min11:3848 min21 Jul
Suva23:29 → 01:2811:490 min11:4948 min21 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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