Ruling · Vivasvat Saptamī · 1966

Saturday 25 June

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 5 min 51 s.

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 24 June

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
Saptamī begins 12:50:08
11:0811:3211:5612:2012:4413:0813:32

0 of 48 minutes covered

Midday of Saturday 25 June

Taken. Saptamī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 12:50 on Fri 24 Jun to 10:28 on Sat 25 Jun.

    1966-06-24T04:50:09Z → 1966-06-25T02:27:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 24th, 11:56–12:44 on the 25th.

    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 24th and 0 of 48 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 351 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1966: Saturday 25 June.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1966 falls on Saturday 25 June. Saptamī runs from 12:50 on Fri 24 Jun to 10:28 on Sat 25 Jun, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1966/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Jun
Ahargaṇa, classicalDisc centre, no refractionSat 25 Jun
compat-drikpanchangComparison profileFri 24 Jun
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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles21:50 → 19:2812:3148 min12:310 min24 Jun
Chicago23:50 → 21:2812:2948 min12:290 min24 Jun
Jersey City00:50 → 22:2812:3548 min12:350 min24 Jun
Port of Spain00:50 → 22:2811:4448 min11:450 min24 Jun
London05:50 → 03:2812:3948 min12:390 min24 Jun
Durban06:50 → 04:2811:3448 min11:340 min24 Jun
Dubai08:50 → 06:2811:5748 min11:570 min24 Jun
Delhi10:20 → 07:5811:5948 min11:590 min24 Jun
Kolkata10:20 → 07:5811:1548 min11:150 min24 Jun
Singapore12:20 → 09:5812:1341 min12:130 min24 Jun
Sydney14:50 → 12:2811:330 min11:3448 min25 Jun
Suva16:50 → 14:2811:440 min11:4548 min25 Jun
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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