Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2090

Saturday 28 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 616 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 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

Midday of Saturday 28 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

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

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 22:49 on Fri 27 Oct to 22:42 on Sat 28 Oct.

    2090-10-27T14:48:39Z → 2090-10-28T14:41:45Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 27th, 11:38–12:26 on the 28th.

    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 27th and 48 of 48 on the 28th.

    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 36949 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2090: Saturday 28 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2090 falls on Saturday 28 October. Ṣaṣṭhī runs from 22:49 on Fri 27 Oct to 22:42 on Sat 28 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2090/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 28 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 28 Oct
compat-drikpanchangComparison profileSat 28 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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles07:49 → 07:4212:1348 min12:130 min27 Oct
Chicago09:49 → 09:4212:1048 min12:100 min27 Oct
Jersey City10:49 → 10:4212:1648 min12:160 min27 Oct
Port of Spain10:49 → 10:4211:2648 min11:260 min27 Oct
London15:49 → 15:4212:200 min12:2048 min28 Oct
Durban16:49 → 16:4211:160 min11:1648 min28 Oct
Dubai18:49 → 18:4211:390 min11:3948 min28 Oct
Delhi20:19 → 20:1211:410 min11:4148 min28 Oct
Kolkata20:19 → 20:1210:570 min10:5648 min28 Oct
Singapore22:49 → 22:4212:250 min12:2548 min28 Oct
Sydney01:49 → 01:4212:160 min12:1548 min28 Oct
Suva02:49 → 02:4211:270 min11:2648 min28 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

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