Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2010

Thursday 11 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 123 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 11 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 12 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 08:16 on Thu 11 Nov to 09:35 on Fri 12 Nov.

    2010-11-11T00:16:18Z → 2010-11-12T01:34:58Z

  2. 02

    Kāla

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

    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 11th and 0 of 48 on the 12th.

    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 7385 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2010: Thursday 11 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2010 falls on Thursday 11 November. Ṣaṣṭhī runs from 08:16 on Thu 11 Nov to 09:35 on Fri 12 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 11 Nov
compat-drikpanchangComparison profileThu 11 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles16:16 → 17:3511:1348 min11:130 min11 Nov
Chicago18:16 → 19:3511:1048 min11:110 min11 Nov
Jersey City19:16 → 20:3511:1648 min11:160 min11 Nov
Port of Spain20:16 → 21:3511:2648 min11:260 min11 Nov
London00:16 → 01:3511:2048 min11:200 min11 Nov
Durban02:16 → 03:3511:1648 min11:160 min11 Nov
Dubai04:16 → 05:3511:3948 min11:390 min11 Nov
Delhi05:46 → 07:0511:4148 min11:410 min11 Nov
Kolkata05:46 → 07:0510:5648 min10:570 min11 Nov
Singapore08:16 → 09:3512:2548 min12:250 min11 Nov
Sydney11:16 → 12:3512:1548 min12:1619 min11 Nov
Suva13:16 → 14:3512:260 min12:2648 min12 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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