Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1997

Thursday 6 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 433 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 Wednesday 5 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 Thursday 6 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 20:24 on Wed 5 Nov to 19:38 on Thu 6 Nov.

    1997-11-05T12:24:14Z → 1997-11-06T11:38:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 5th, 11:38–12:26 on the 6th.

    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 5th and 48 of 48 on the 6th.

    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 25964 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1997: Thursday 6 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1997 falls on Thursday 6 November. Ṣaṣṭhī runs from 20:24 on Wed 5 Nov to 19:38 on Thu 6 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 6 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 6 Nov
compat-drikpanchangComparison profileThu 6 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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles04:24 → 03:3811:1248 min11:120 min5 Nov
Chicago06:24 → 05:3811:1048 min11:100 min5 Nov
Jersey City07:24 → 06:3811:1648 min11:160 min5 Nov
Port of Spain08:24 → 07:3811:2648 min11:260 min5 Nov
London12:24 → 11:3811:200 min11:2018 min6 Nov
Durban14:24 → 13:3811:160 min11:1648 min6 Nov
Dubai16:24 → 15:3811:380 min11:3848 min6 Nov
Delhi17:54 → 17:0811:410 min11:4148 min6 Nov
Kolkata17:54 → 17:0810:560 min10:5648 min6 Nov
Singapore20:24 → 19:3812:240 min12:2448 min6 Nov
Sydney23:24 → 22:3812:150 min12:1548 min6 Nov
Suva00:24 → 23:3811:260 min11:2648 min6 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