Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1908

Saturday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 20 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 30 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 31 October

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī ends 12:45:33
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 13:59 on Fri 30 Oct to 12:46 on Sat 31 Oct.

    1908-10-30T05:59:13Z → 1908-10-31T04:45:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 30th, 11:38–12:26 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 1196 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1908: Saturday 31 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1908 falls on Saturday 31 October. Ṣaṣṭhī runs from 13:59 on Fri 30 Oct to 12:46 on Sat 31 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1908/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 31 Oct
compat-drikpanchangComparison profileSat 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles21:59 → 20:4611:1348 min11:120 min30 Oct
Chicago23:59 → 22:4611:1048 min11:100 min30 Oct
Jersey City00:59 → 23:4611:1648 min11:160 min30 Oct
Port of Spain01:59 → 00:4611:2648 min11:260 min30 Oct
London05:59 → 04:4611:2048 min11:200 min30 Oct
Durban07:59 → 06:4611:1648 min11:160 min30 Oct
Dubai09:40 → 08:2711:1948 min11:190 min30 Oct
Delhi11:29 → 10:1611:4148 min11:410 min30 Oct
Kolkata11:29 → 10:1610:5615 min10:560 min30 Oct
Singapore12:59 → 11:4611:240 min11:2421 min31 Oct
Sydney15:59 → 14:4611:150 min11:1548 min31 Oct
Suva17:54 → 16:4111:210 min11:2148 min31 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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