Ruling · Vivasvat Saptamī · 2029

Wednesday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 36 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 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 Wednesday 18 July

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

madhyāhna begins 12:00  12:48 madhyāhna ends
Saptamī ends 11:23:43
11:1211:3612:0012:2412:4813:1213:36

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 13:43 on Tue 17 Jul to 11:24 on Wed 18 Jul.

    2029-07-17T05:42:31Z → 2029-07-18T03:23:44Z

  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 0 of 48 on the 18th.

    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 2189 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 2029: Wednesday 18 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 2029 falls on Wednesday 18 July. Saptamī runs from 13:43 on Tue 17 Jul to 11:24 on Wed 18 Jul, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2029/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 18 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 18 Jul
compat-drikpanchangComparison profileTue 17 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 Angeles22:43 → 20:2412:3548 min12:350 min17 Jul
Chicago00:43 → 22:2412:3348 min12:330 min17 Jul
Jersey City01:43 → 23:2412:3848 min12:380 min17 Jul
Port of Spain01:43 → 23:2411:4848 min11:480 min17 Jul
London06:43 → 04:2412:4248 min12:420 min17 Jul
Durban07:43 → 05:2411:3848 min11:380 min17 Jul
Dubai09:43 → 07:2412:0148 min12:010 min17 Jul
Delhi11:13 → 08:5412:0348 min12:030 min17 Jul
Kolkata11:13 → 08:5411:1948 min11:190 min17 Jul
Singapore13:43 → 11:2412:470 min12:470 min18 Jul
Sydney15:43 → 13:2411:370 min11:3848 min18 Jul
Suva17:43 → 15:2411:490 min11:4948 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

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