Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2039

Monday 21 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 424 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 20 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 Monday 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

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

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 21:44 on Sun 20 Nov to 19:32 on Mon 21 Nov.

    2039-11-20T13:44:21Z → 2039-11-21T11:31:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 20th, 11:40–12:28 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 25435 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2039: Monday 21 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2039 falls on Monday 21 November. Ṣaṣṭhī runs from 21:44 on Sun 20 Nov to 19:32 on Mon 21 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2039/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 Nov
Ahargaṇa, classicalDisc centre, no refractionMon 21 Nov
compat-drikpanchangComparison profileMon 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 Angeles05:44 → 03:3211:1448 min11:150 min20 Nov
Chicago07:44 → 05:3211:1248 min11:120 min20 Nov
Jersey City08:44 → 06:3211:1848 min11:180 min20 Nov
Port of Spain09:44 → 07:3211:2848 min11:280 min20 Nov
London13:44 → 11:3211:220 min11:2210 min21 Nov
Durban15:44 → 13:3211:180 min11:1848 min21 Nov
Dubai17:44 → 15:3211:400 min11:4048 min21 Nov
Delhi19:14 → 17:0211:420 min11:4348 min21 Nov
Kolkata19:14 → 17:0210:580 min10:5848 min21 Nov
Singapore21:44 → 19:3212:260 min12:2648 min21 Nov
Sydney00:44 → 22:3212:170 min12:1748 min21 Nov
Suva01:44 → 23:3211:280 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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