Ruling · Vivasvat Saptamī · 2086

Thursday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 85 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 17 July

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

0 of 48 minutes covered

Midday of Thursday 18 July

Taken. The only midday Saptamī reaches.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

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 14:13 on Wed 17 Jul to 16:37 on Thu 18 Jul.

    2086-07-17T06:13:25Z → 2086-07-18T08:37:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 17th, 12:01–12:49 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 48 of 48 on the 18th.

    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 5090 s

  5. 05

    Ruling

    Vivasvat Saptamī, Baoding, 2086: Thursday 18 July.

    confidence: determinate

Say it like this

In Baoding, Vivasvat Saptamī 2086 falls on Thursday 18 July. Saptamī runs from 14:13 on Wed 17 Jul to 16:37 on Thu 18 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2086/vivasvat-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 18 Jul
compat-drikpanchangComparison profileThu 18 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 Angeles23:13 → 01:3712:3548 min12:360 min17 Jul
Chicago01:13 → 03:3712:3348 min12:330 min17 Jul
Jersey City02:13 → 04:3712:3948 min12:390 min17 Jul
Port of Spain02:13 → 04:3711:4948 min11:490 min17 Jul
London07:13 → 09:3712:4348 min12:430 min17 Jul
Durban08:13 → 10:3711:3948 min11:390 min17 Jul
Dubai10:13 → 12:3712:0148 min12:0136 min17 Jul
Delhi11:43 → 14:0712:0448 min12:0448 min17 Jul
Kolkata11:43 → 14:0711:1924 min11:1948 min17 Jul
Singapore14:13 → 16:3712:470 min12:4748 min18 Jul
Sydney16:13 → 18:3711:380 min11:3848 min18 Jul
Suva18:13 → 20:3711:490 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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