Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1917

Tuesday 20 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 532 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 Monday 19 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

0 of 48 minutes covered

Midday of Tuesday 20 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

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

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 22:56 on Mon 19 Nov to 21:20 on Tue 20 Nov.

    1917-11-19T14:56:25Z → 1917-11-20T13:19:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 19th, 11:40–12:28 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 31934 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1917: Tuesday 20 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1917 falls on Tuesday 20 November. Ṣaṣṭhī runs from 22:56 on Mon 19 Nov to 21:20 on Tue 20 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1917/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 20 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 20 Nov
compat-drikpanchangComparison profileTue 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles06:56 → 05:2011:1448 min11:150 min19 Nov
Chicago08:56 → 07:2011:1248 min11:120 min19 Nov
Jersey City09:56 → 08:2011:1848 min11:180 min19 Nov
Port of Spain10:56 → 09:2011:2748 min11:280 min19 Nov
London14:56 → 13:2011:220 min11:2248 min20 Nov
Durban16:56 → 15:2011:170 min11:1848 min20 Nov
Dubai18:37 → 17:0111:210 min11:2148 min20 Nov
Delhi20:26 → 18:5011:420 min11:4348 min20 Nov
Kolkata20:26 → 18:5010:580 min10:5848 min20 Nov
Singapore21:56 → 20:2011:260 min11:2648 min20 Nov
Sydney00:56 → 23:2011:170 min11:1748 min20 Nov
Suva02:56 → 01:2011:280 min11:2848 min20 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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