Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1903

Monday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 635 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 26 October

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

Midday of Tuesday 27 October

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

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

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 23:15 on Sun 25 Oct to 01:03 on Tue 27 Oct.

    1903-10-25T15:14:50Z → 1903-10-26T17:03:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 26th, 11:38–12:26 on the 27th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.

    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 38074 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1903: Monday 26 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1903 falls on Monday 26 October. Ṣaṣṭhī runs from 23:15 on Sun 25 Oct to 01:03 on Tue 27 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1903/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 26 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 26 Oct
compat-drikpanchangComparison profileMon 26 Oct
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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles07:15 → 09:0311:1348 min11:130 min25 Oct
Chicago09:15 → 11:0311:1148 min11:100 min25 Oct
Jersey City10:15 → 12:0311:1648 min11:1647 min25 Oct
Port of Spain11:15 → 13:0311:2648 min11:2648 min25 Oct
London15:15 → 17:0311:200 min11:2048 min26 Oct
Durban17:15 → 19:0311:160 min11:1648 min26 Oct
Dubai18:56 → 20:4411:200 min11:2048 min26 Oct
Delhi20:36 → 22:2411:320 min11:3248 min26 Oct
Kolkata20:36 → 22:2410:480 min10:4848 min26 Oct
Singapore22:10 → 23:5811:200 min11:2048 min26 Oct
Sydney01:15 → 03:0311:160 min11:1648 min26 Oct
Suva03:10 → 04:5811:220 min11:2248 min26 Oct
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