Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2021

Wednesday 10 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 40 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 9 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī begins 13:06:13
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Wednesday 10 November

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

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī ends 10:55:38
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 13:06 on Tue 9 Nov to 10:56 on Wed 10 Nov.

    2021-11-09T05:06:13Z → 2021-11-10T02:55:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 9th, 11:38–12:26 on the 10th.

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

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 0 of 48 on the 10th.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 2429 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2021: Wednesday 10 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2021 falls on Wednesday 10 November. Ṣaṣṭhī runs from 13:06 on Tue 9 Nov to 10:56 on Wed 10 Nov, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2021/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 10 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 10 Nov
compat-drikpanchangComparison profileWed 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 10thCoveredRuled
Los Angeles21:06 → 18:5611:1348 min11:130 min9 Nov
Chicago23:06 → 20:5611:1048 min11:100 min9 Nov
Jersey City00:06 → 21:5611:1648 min11:160 min9 Nov
Port of Spain01:06 → 22:5611:2648 min11:260 min9 Nov
London05:06 → 02:5611:2048 min11:200 min9 Nov
Durban07:06 → 04:5611:1648 min11:160 min9 Nov
Dubai09:06 → 06:5611:3848 min11:390 min9 Nov
Delhi10:36 → 08:2611:4148 min11:410 min9 Nov
Kolkata10:36 → 08:2610:5648 min10:560 min9 Nov
Singapore13:06 → 10:5612:246 min12:240 min9 Nov
Sydney16:06 → 13:5612:150 min12:1548 min10 Nov
Suva17:06 → 14:5611:260 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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