Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1939

Friday 17 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 113 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 16 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 Friday 17 November

Taken. The only midday Ṣaṣṭhī reaches.

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

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 14:19 on Thu 16 Nov to 15:58 on Fri 17 Nov.

    1939-11-16T06:19:30Z → 1939-11-17T07:58:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 16th, 11:39–12:27 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 6774 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1939: Friday 17 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1939 falls on Friday 17 November. Ṣaṣṭhī runs from 14:19 on Thu 16 Nov to 15:58 on Fri 17 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1939/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 17 Nov
compat-drikpanchangComparison profileFri 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles22:19 → 23:5811:1448 min11:140 min16 Nov
Chicago00:19 → 01:5811:1148 min11:110 min16 Nov
Jersey City01:19 → 02:5811:1748 min11:170 min16 Nov
Port of Spain02:19 → 03:5811:2748 min11:270 min16 Nov
London07:19 → 08:5812:2148 min12:210 min16 Nov
Durban08:19 → 09:5811:1748 min11:170 min16 Nov
Dubai10:19 → 11:5811:3948 min11:4019 min16 Nov
Delhi11:49 → 13:2811:4240 min11:4248 min17 Nov
Kolkata11:49 → 13:2810:570 min10:5748 min17 Nov
Singapore13:39 → 15:1811:450 min11:4548 min17 Nov
Sydney16:19 → 17:5811:160 min11:1648 min17 Nov
Suva18:19 → 19:5811:270 min11:2748 min17 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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