Ruling · Sūrya Ṣaṣṭhī (Chhath) · 1938

Saturday 29 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 551 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 Friday 28 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 29 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

Ṣaṣṭhī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 21:36 on Fri 28 Oct to 00:00 on Sun 30 Oct.

    1938-10-28T13:36:24Z → 1938-10-29T16:00:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 28th, 11:38–12:26 on the 29th.

    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 28th and 48 of 48 on the 29th.

    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 33035 s

  5. 05

    Ruling

    Sūrya Ṣaṣṭhī, Baoding, 1938: Saturday 29 October.

    confidence: determinate

Say it like this

In Baoding, Sūrya Ṣaṣṭhī (Chhath) 1938 falls on Saturday 29 October. Ṣaṣṭhī runs from 21:36 on Fri 28 Oct to 00:00 on Sun 30 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1938/surya-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 29 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 29 Oct
compat-drikpanchangComparison profileSat 29 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles05:36 → 08:0011:1348 min11:130 min28 Oct
Chicago07:36 → 10:0011:1048 min11:100 min28 Oct
Jersey City08:36 → 11:0011:1648 min11:160 min28 Oct
Port of Spain09:36 → 12:0011:2648 min11:2634 min28 Oct
London13:36 → 16:0011:200 min11:2048 min29 Oct
Durban15:36 → 18:0011:160 min11:1648 min29 Oct
Dubai17:36 → 20:0011:390 min11:3848 min29 Oct
Delhi19:06 → 21:3011:410 min11:4148 min29 Oct
Kolkata19:06 → 21:3010:560 min10:5648 min29 Oct
Singapore20:56 → 23:2011:450 min11:4448 min29 Oct
Sydney23:36 → 02:0011:150 min11:1548 min29 Oct
Suva01:36 → 04:0011:260 min11:2648 min29 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

About Ahargaṇa