Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1965

Saturday 30 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 622 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 29 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 30 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 22:48 on Fri 29 Oct to 00:48 on Sun 31 Oct.

    1965-10-29T14:47:43Z → 1965-10-30T16:48:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 29th, 11:38–12:26 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 37322 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1965: Saturday 30 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1965 falls on Saturday 30 October. Ṣaṣṭhī runs from 22:48 on Fri 29 Oct to 00:48 on Sun 31 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1965/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 30 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 30 Oct
compat-drikpanchangComparison profileSat 30 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles07:48 → 09:4812:1348 min12:120 min29 Oct
Chicago09:48 → 11:4812:1048 min12:100 min29 Oct
Jersey City10:48 → 12:4812:1648 min12:1633 min29 Oct
Port of Spain10:48 → 12:4811:2648 min11:2648 min29 Oct
London14:48 → 16:4811:200 min11:2048 min30 Oct
Durban16:48 → 18:4811:160 min11:1648 min30 Oct
Dubai18:48 → 20:4811:380 min11:3848 min30 Oct
Delhi20:18 → 22:1811:410 min11:4148 min30 Oct
Kolkata20:18 → 22:1810:560 min10:5648 min30 Oct
Singapore22:18 → 00:1811:540 min11:5448 min30 Oct
Sydney00:48 → 02:4811:150 min11:1548 min30 Oct
Suva02:48 → 04:4811:260 min11:2648 min30 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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