Ruling · Vivasvat Saptamī · 2028

Wednesday 28 June

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 28 June

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:57  12:45 madhyāhna ends
Saptamī begins 11:38:08
11:0911:3311:5712:2112:4513:0913:33

48 of 48 minutes covered

Midday of Thursday 29 June

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

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 11:38 on Wed 28 Jun to 09:17 on Thu 29 Jun.

    2028-06-28T03:38:09Z → 2028-06-29T01:16:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 28th, 11:58–12:46 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 1157 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 2028: Wednesday 28 June.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 2028 falls on Wednesday 28 June. Saptamī runs from 11:38 on Wed 28 Jun to 09:17 on Thu 29 Jun and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2028/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Jun
Ahargaṇa, classicalDisc centre, no refractionWed 28 Jun
compat-drikpanchangComparison profileWed 28 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles20:38 → 18:1712:3248 min12:330 min28 Jun
Chicago22:38 → 20:1712:3048 min12:300 min28 Jun
Jersey City23:38 → 21:1712:3648 min12:360 min28 Jun
Port of Spain23:38 → 21:1711:4648 min11:460 min28 Jun
London04:38 → 02:1712:4048 min12:400 min28 Jun
Durban05:38 → 03:1711:3548 min11:360 min28 Jun
Dubai07:38 → 05:1711:5848 min11:580 min28 Jun
Delhi09:08 → 06:4712:0048 min12:010 min28 Jun
Kolkata09:08 → 06:4711:1648 min11:160 min28 Jun
Singapore11:38 → 09:1712:4448 min12:440 min28 Jun
Sydney13:38 → 11:1711:350 min11:350 min29 Jun
Suva15:38 → 13:1711:460 min11:4648 min29 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

About Ahargaṇa