Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2077

Sunday 21 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 440 minutes.

Decide it for

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 Sunday 21 November

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

48 of 48 minutes covered

Midday of Monday 22 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

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 04:20 on Sun 21 Nov to 03:34 on Mon 22 Nov.

    2077-11-20T20:19:45Z → 2077-11-21T19:34:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 21st, 11:40–12:28 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 26418 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2077: Sunday 21 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2077 falls on Sunday 21 November. Ṣaṣṭhī runs from 04:20 on Sun 21 Nov to 03:34 on Mon 22 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2077/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 21 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 21 Nov
compat-drikpanchangComparison profileSun 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles12:20 → 11:3411:150 min11:1519 min21 Nov
Chicago14:20 → 13:3411:120 min11:1348 min21 Nov
Jersey City15:20 → 14:3411:180 min11:1848 min21 Nov
Port of Spain16:20 → 15:3411:280 min11:2848 min21 Nov
London20:20 → 19:3411:220 min11:2248 min21 Nov
Durban22:20 → 21:3411:180 min11:1848 min21 Nov
Dubai00:20 → 23:3411:410 min11:4148 min21 Nov
Delhi01:50 → 01:0411:430 min11:4348 min21 Nov
Kolkata01:50 → 01:0410:580 min10:5948 min21 Nov
Singapore04:20 → 03:3412:260 min12:2748 min21 Nov
Sydney07:20 → 06:3412:170 min12:1748 min21 Nov
Suva08:20 → 07:3411:280 min11:2848 min21 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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