Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2040

Saturday 10 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 137 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 Friday 9 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Saturday 10 November

Taken. The only midday Ṣaṣṭhī reaches.

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

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 17:02 on Fri 9 Nov to 14:43 on Sat 10 Nov.

    2040-11-09T09:02:07Z → 2040-11-10T06:43:11Z

  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 48 of 48 on the 10th.

    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 8237 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2040: Saturday 10 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2040 falls on Saturday 10 November. Ṣaṣṭhī runs from 17:02 on Fri 9 Nov to 14:43 on Sat 10 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2040/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 10 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 10 Nov
compat-drikpanchangComparison profileSat 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 Angeles01:02 → 22:4311:1348 min11:130 min9 Nov
Chicago03:02 → 00:4311:1048 min11:100 min9 Nov
Jersey City04:02 → 01:4311:1648 min11:160 min9 Nov
Port of Spain05:02 → 02:4311:2648 min11:260 min9 Nov
London09:02 → 06:4311:2048 min11:200 min9 Nov
Durban11:02 → 08:4311:1648 min11:160 min9 Nov
Dubai13:02 → 10:4311:390 min11:390 min10 Nov
Delhi14:32 → 12:1311:410 min11:4132 min10 Nov
Kolkata14:32 → 12:1310:560 min10:5648 min10 Nov
Singapore17:02 → 14:4312:240 min12:2548 min10 Nov
Sydney20:02 → 17:4312:150 min12:1548 min10 Nov
Suva21:02 → 18:4311:260 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

About Ahargaṇa