Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2078

Friday 11 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 35 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 10 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Ṣaṣṭhī begins 13:01:10
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Friday 11 November

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 13:01 on Thu 10 Nov to 14:21 on Fri 11 Nov.

    2078-11-10T05:01:11Z → 2078-11-11T06:20:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 10th, 11:38–12:26 on the 11th.

    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 10th and 48 of 48 on the 11th.

    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 2111 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 2078: Friday 11 November.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 2078 falls on Friday 11 November. Ṣaṣṭhī runs from 13:01 on Thu 10 Nov to 14:21 on Fri 11 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2078/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 11 Nov
compat-drikpanchangComparison profileFri 11 Nov
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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles21:01 → 22:2111:1348 min11:130 min10 Nov
Chicago23:01 → 00:2111:1048 min11:110 min10 Nov
Jersey City00:01 → 01:2111:1648 min11:160 min10 Nov
Port of Spain01:01 → 02:2111:2648 min11:260 min10 Nov
London05:01 → 06:2111:2048 min11:200 min10 Nov
Durban07:01 → 08:2111:1648 min11:160 min10 Nov
Dubai09:01 → 10:2111:3948 min11:390 min10 Nov
Delhi10:31 → 11:5111:4148 min11:4110 min10 Nov
Kolkata10:31 → 11:5110:5648 min10:5748 min10 Nov
Singapore13:01 → 14:2112:2511 min12:2548 min11 Nov
Sydney16:01 → 17:2112:150 min12:1648 min11 Nov
Suva17:01 → 18:2111:260 min11:2748 min11 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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