Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1987

Wednesday 28 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 236 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 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

Midday of Wednesday 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 18:27 on Tue 27 Oct to 16:22 on Wed 28 Oct.

    1987-10-27T10:26:54Z → 1987-10-28T08:22:15Z

  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 14188 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1987: Wednesday 28 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1987 falls on Wednesday 28 October. Ṣaṣṭhī runs from 18:27 on Tue 27 Oct to 16:22 on Wed 28 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 28 Oct
compat-drikpanchangComparison profileWed 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 Angeles02:27 → 00:2211:1348 min11:130 min27 Oct
Chicago04:27 → 02:2211:1048 min11:100 min27 Oct
Jersey City05:27 → 03:2211:1648 min11:160 min27 Oct
Port of Spain06:27 → 04:2211:2648 min11:260 min27 Oct
London10:27 → 08:2211:2048 min11:200 min27 Oct
Durban12:27 → 10:2211:160 min11:160 min28 Oct
Dubai14:27 → 12:2211:390 min11:3844 min28 Oct
Delhi15:57 → 13:5211:410 min11:4148 min28 Oct
Kolkata15:57 → 13:5210:560 min10:5648 min28 Oct
Singapore18:27 → 16:2212:250 min12:2448 min28 Oct
Sydney21:27 → 19:2212:150 min12:1548 min28 Oct
Suva22:27 → 20:2211:260 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

About Ahargaṇa