Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2030

Friday 1 November

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

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī begins 12:55:13
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Friday 1 November

Taken. Ṣaṣṭhī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:37  12:25 madhyāhna ends
10:4911:1311:3712:0112:2512:4913:13

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 12:55 on Thu 31 Oct to 10:35 on Fri 1 Nov.

    2030-10-31T04:55:14Z → 2030-11-01T02:34:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 31st, 11:37–12:25 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 0 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

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 1782 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2030: Friday 1 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2030 falls on Friday 1 November. Ṣaṣṭhī runs from 12:55 on Thu 31 Oct to 10:35 on Fri 1 Nov, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2030/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 1 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 1 Nov
compat-drikpanchangComparison profileThu 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 Angeles21:55 → 19:3512:1248 min12:120 min31 Oct
Chicago23:55 → 21:3512:1048 min12:100 min31 Oct
Jersey City00:55 → 22:3512:1648 min12:160 min31 Oct
Port of Spain00:55 → 22:3511:2648 min11:260 min31 Oct
London04:55 → 02:3511:2048 min11:200 min31 Oct
Durban06:55 → 04:3511:1648 min11:160 min31 Oct
Dubai08:55 → 06:3511:3848 min11:380 min31 Oct
Delhi10:25 → 08:0511:4148 min11:400 min31 Oct
Kolkata10:25 → 08:0510:5648 min10:560 min31 Oct
Singapore12:55 → 10:3512:2417 min12:240 min31 Oct
Sydney15:55 → 13:3512:150 min12:1548 min1 Nov
Suva16:55 → 14:3511:260 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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