Ruling · Hala Ṣaṣṭhī · 1902

Sunday 24 August

Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 3 min 47 s away. Say “contested”.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Sunday 24 August

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:18  12:06 madhyāhna ends
Ṣaṣṭhī begins 11:21:52
10:3010:5411:1811:4212:0612:3012:54

44 of 48 minutes covered, the last 44

Midday of Monday 25 August

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:18  12:06 madhyāhna ends
10:3010:5411:1811:4212:0612:3012:54

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 11:22 on Sun 24 Aug to 09:52 on Mon 25 Aug.

    1902-08-24T03:21:53Z → 1902-08-25T01:51:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 24th, 11:18–12:06 on the 25th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 44 of 48 minutes on the 24th and 0 of 48 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 227 s < 300 s

  5. 05

    Ruling

    Hala Ṣaṣṭhī, Daqing, 1902: Sunday 24 August.

    confidence: boundary (margin)

Say it like this

In Daqing, Hala Ṣaṣṭhī 1902 falls on Sunday 24 August. Ṣaṣṭhī runs from 11:22 on Sun 24 Aug to 09:52 on Mon 25 Aug and covers 44 of 48 minutes of madhyāhna that midday. It is 3 min 47 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/1902/hala-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 24 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 24 Aug
compat-drikpanchangComparison profileSun 24 Aug
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/hala-shashthi · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Kṛṣṇa · Ṣaṣṭhī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 103

“K 6 Hala sasthi (paraviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceṢaṣṭhīMadhyāhna 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles19:22 → 17:5211:3148 min11:310 min24 Aug
Chicago21:22 → 19:5211:2948 min11:280 min24 Aug
Jersey City22:22 → 20:5211:3448 min11:340 min24 Aug
Port of Spain23:22 → 21:5211:4448 min11:440 min24 Aug
London03:22 → 01:5211:3848 min11:380 min24 Aug
Durban04:52 → 03:2211:0548 min11:040 min24 Aug
Dubai07:03 → 05:3311:3848 min11:380 min24 Aug
Delhi08:43 → 07:1311:5048 min11:500 min24 Aug
Kolkata08:43 → 07:1311:0648 min11:060 min24 Aug
Singapore10:17 → 08:4711:3848 min11:380 min24 Aug
Sydney13:22 → 11:5211:340 min11:3418 min25 Aug
Suva15:17 → 13:4711:400 min11:4048 min25 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
hala-shashthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa