Ruling · Hala Ṣaṣṭhī · 2039

Wednesday 10 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 15 minutes.

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 Tuesday 9 August

Qualifies with 15 of 48 minutes. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
Ṣaṣṭhī begins 11:54:26
10:3310:5711:2111:4512:0912:3312:57

15 of 48 minutes covered, the last 15

Midday of Wednesday 10 August

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:21  12:09 madhyāhna ends
Ṣaṣṭhī ends 12:52:48
10:3310:5711:2111:4512:0912:3312:57

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 11:54 on Tue 9 Aug to 12:53 on Wed 10 Aug.

    2039-08-09T03:54:26Z → 2039-08-10T04:52:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 9th, 11:21–12:09 on the 10th.

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

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 15 of 48 minutes on the 9th and 48 of 48 on the 10th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 887 s

  5. 05

    Ruling

    Hala Ṣaṣṭhī, Daqing, 2039: Wednesday 10 August.

    confidence: determinate

Say it like this

In Daqing, Hala Ṣaṣṭhī 2039 falls on Wednesday 10 August. Ṣaṣṭhī runs from 11:54 on Tue 9 Aug to 12:53 on Wed 10 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 15 minutes; by the rule the second midday is taken.

ahargana.org/daqing/festivals/2039/hala-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 10 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 10 Aug
compat-drikpanchangComparison profileWed 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles20:54 → 21:5312:3448 min12:340 min9 Aug
Chicago22:54 → 23:5312:3248 min12:320 min9 Aug
Jersey City23:54 → 00:5312:3848 min12:370 min9 Aug
Port of Spain23:54 → 00:5311:4848 min11:470 min9 Aug
London04:54 → 05:5312:4248 min12:410 min9 Aug
Durban05:54 → 06:5311:3848 min11:380 min9 Aug
Dubai07:54 → 08:5312:0048 min12:000 min9 Aug
Delhi09:24 → 10:2312:0248 min12:020 min9 Aug
Kolkata09:24 → 10:2311:1848 min11:180 min9 Aug
Singapore11:54 → 12:5312:4648 min12:467 min10 Aug
Sydney13:54 → 14:5311:370 min11:3748 min10 Aug
Suva15:54 → 16:5311:480 min11:4848 min10 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

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