Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1927

Monday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 24 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 Monday 31 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 1 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī ends 11:13:15
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 10:19 on Mon 31 Oct to 11:13 on Tue 1 Nov.

    1927-10-31T02:19:01Z → 1927-11-01T03:13:16Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 31st, 11:38–12:26 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 1460 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1927: Monday 31 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1927 falls on Monday 31 October. Ṣaṣṭhī runs from 10:19 on Mon 31 Oct to 11:13 on Tue 1 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1927/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 31 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 31 Oct
compat-drikpanchangComparison profileMon 31 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles18:19 → 19:1311:1248 min11:120 min31 Oct
Chicago20:19 → 21:1311:1048 min11:100 min31 Oct
Jersey City21:19 → 22:1311:1648 min11:160 min31 Oct
Port of Spain22:19 → 23:1311:2648 min11:260 min31 Oct
London02:19 → 03:1311:2048 min11:200 min31 Oct
Durban04:19 → 05:1311:1648 min11:160 min31 Oct
Dubai06:19 → 07:1311:3848 min11:380 min31 Oct
Delhi07:49 → 08:4311:4148 min11:410 min31 Oct
Kolkata07:49 → 08:4310:5648 min10:560 min31 Oct
Singapore09:19 → 10:1311:2448 min11:240 min31 Oct
Sydney12:19 → 13:1311:150 min11:1548 min1 Nov
Suva14:19 → 15:1311:260 min11:2648 min1 Nov
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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