Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2028

Monday 23 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 657 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 Sunday 22 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 Monday 23 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 23:25 on Sun 22 Oct to 23:23 on Mon 23 Oct.

    2028-10-22T15:24:48Z → 2028-10-23T15:23:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 22nd, 11:38–12:26 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

    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 39412 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2028: Monday 23 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2028 falls on Monday 23 October. Ṣaṣṭhī runs from 23:25 on Sun 22 Oct to 23:23 on Mon 23 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2028/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 23 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 23 Oct
compat-drikpanchangComparison profileMon 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles08:25 → 08:2312:1348 min12:130 min22 Oct
Chicago10:25 → 10:2312:1148 min12:110 min22 Oct
Jersey City11:25 → 11:2312:1648 min12:160 min22 Oct
Port of Spain11:25 → 11:2311:2648 min11:260 min22 Oct
London16:25 → 16:2312:210 min12:2048 min23 Oct
Durban17:25 → 17:2311:170 min11:1648 min23 Oct
Dubai19:25 → 19:2311:390 min11:3948 min23 Oct
Delhi20:55 → 20:5311:410 min11:4148 min23 Oct
Kolkata20:55 → 20:5310:570 min10:5748 min23 Oct
Singapore23:25 → 23:2312:250 min12:2548 min23 Oct
Sydney02:25 → 02:2312:160 min12:1648 min23 Oct
Suva03:25 → 03:2311:270 min11:2748 min23 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