Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1983

Thursday 10 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 204 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 Thursday 10 November

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

48 of 48 minutes covered

Midday of Friday 11 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Ṣaṣṭhī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 06:18 on Thu 10 Nov to 08:14 on Fri 11 Nov.

    1983-11-09T22:17:48Z → 1983-11-11T00:13:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 10th, 11:38–12:26 on the 11th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 12238 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1983: Thursday 10 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1983 falls on Thursday 10 November. Ṣaṣṭhī runs from 06:18 on Thu 10 Nov to 08:14 on Fri 11 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 10 Nov
compat-drikpanchangComparison profileThu 10 Nov
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/surya-shashthi · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Ṣaṣṭhī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceṢaṣṭhīMadhyāhna 9thCoveredMadhyāhna 11thCoveredRuled
Los Angeles14:18 → 16:1411:130 min11:130 min10 Nov
Chicago16:18 → 18:1411:100 min11:100 min10 Nov
Jersey City17:18 → 19:1411:160 min11:160 min10 Nov
Port of Spain18:18 → 20:1411:260 min11:260 min10 Nov
London22:18 → 00:1411:200 min11:200 min10 Nov
Durban00:18 → 02:1411:160 min11:160 min10 Nov
Dubai02:18 → 04:1411:380 min11:390 min10 Nov
Delhi03:48 → 05:4411:410 min11:410 min10 Nov
Kolkata03:48 → 05:4410:560 min10:560 min10 Nov
Singapore06:18 → 08:1412:240 min12:250 min10 Nov
Sydney09:18 → 11:1412:150 min12:150 min10 Nov
Suva10:18 → 12:1411:260 min11:2648 min10 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
surya-shashthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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