Ruling · Vivasvat Saptamī · 1971

Tuesday 29 June

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 Tuesday 29 June

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

48 of 48 minutes covered

Midday of Wednesday 30 June

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
Saptamī ends 12:58:11
11:0911:3311:5712:2112:4513:0913:33

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 10:34 on Tue 29 Jun to 12:58 on Wed 30 Jun.

    1971-06-29T02:34:09Z → 1971-06-30T04:58:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 29th, 11:57–12:45 on the 30th.

    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 29th and 48 of 48 on the 30th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 763 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 1971: Tuesday 29 June.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 1971 falls on Tuesday 29 June. Saptamī runs from 10:34 on Tue 29 Jun to 12:58 on Wed 30 Jun and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1971/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 29 Jun
Ahargaṇa, classicalDisc centre, no refractionTue 29 Jun
compat-drikpanchangComparison profileTue 29 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles19:34 → 21:5812:3248 min12:320 min29 Jun
Chicago21:34 → 23:5812:3048 min12:300 min29 Jun
Jersey City22:34 → 00:5812:3648 min12:360 min29 Jun
Port of Spain22:34 → 00:5811:4548 min11:460 min29 Jun
London03:34 → 05:5812:4048 min12:400 min29 Jun
Durban04:34 → 06:5811:3548 min11:350 min29 Jun
Dubai06:34 → 08:5811:5848 min11:580 min29 Jun
Delhi08:04 → 10:2812:0048 min12:000 min29 Jun
Kolkata08:04 → 10:2811:1648 min11:160 min29 Jun
Singapore10:04 → 12:2812:1448 min12:1414 min29 Jun
Sydney12:34 → 14:5811:340 min11:3548 min30 Jun
Suva14:34 → 16:5811:450 min11:4648 min30 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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