Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1998

Monday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 285 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 05:32 on Mon 26 Oct to 06:53 on Tue 27 Oct.

    1998-10-25T21:31:33Z → 1998-10-26T22:53:00Z

  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 17090 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1998: Monday 26 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1998 falls on Monday 26 October. Ṣaṣṭhī runs from 05:32 on Mon 26 Oct to 06:53 on Tue 27 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1998/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 Angeles13:32 → 14:5311:130 min11:1348 min26 Oct
Chicago15:32 → 16:5311:100 min11:1048 min26 Oct
Jersey City16:32 → 17:5311:160 min11:1648 min26 Oct
Port of Spain17:32 → 18:5311:260 min11:2648 min26 Oct
London21:32 → 22:5311:200 min11:2048 min26 Oct
Durban23:32 → 00:5311:160 min11:1648 min26 Oct
Dubai01:32 → 02:5311:390 min11:3948 min26 Oct
Delhi03:02 → 04:2311:410 min11:4148 min26 Oct
Kolkata03:02 → 04:2310:570 min10:5648 min26 Oct
Singapore05:32 → 06:5312:250 min12:2548 min26 Oct
Sydney08:32 → 09:5312:160 min12:1548 min26 Oct
Suva09:32 → 10:5311:270 min11:2648 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

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