Ruling · Hala Ṣaṣṭhī · 1921

Wednesday 24 August

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 417 minutes.

Decide it for

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays

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

Midday of Wednesday 24 August

Taken. The only midday Ṣaṣṭhī reaches.

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

48 of 48 minutes covered

Midday of Thursday 25 August

Ṣaṣṭhī is absent from madhyāhna. Not taken.

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 04:06 on Wed 24 Aug to 04:40 on Thu 25 Aug.

    1921-08-24T00:41:16Z → 1921-08-25T01:15:26Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 24th, 11:37–12:25 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 48 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 25003 s

  5. 05

    Ruling

    Hala Ṣaṣṭhī, Tehran, 1921: Wednesday 24 August.

    confidence: determinate

Say it like this

In Tehran, Hala Ṣaṣṭhī 1921 falls on Wednesday 24 August. Ṣaṣṭhī runs from 04:06 on Wed 24 Aug to 04:40 on Thu 25 Aug and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/1921/hala-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 24 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 24 Aug
compat-drikpanchangComparison profileWed 24 Aug
No institution has a recorded ruling for Tehran.

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 Angeles16:41 → 17:1511:3148 min11:310 min24 Aug
Chicago19:41 → 20:1512:2948 min12:280 min24 Aug
Jersey City20:41 → 21:1512:3448 min12:340 min24 Aug
Port of Spain20:41 → 21:1511:4448 min11:440 min24 Aug
London01:41 → 02:1512:3848 min12:380 min24 Aug
Durban02:41 → 03:1511:3448 min11:340 min24 Aug
Dubai04:41 → 05:1511:5748 min11:570 min24 Aug
Delhi06:11 → 06:4511:5948 min11:590 min24 Aug
Kolkata06:11 → 06:4511:1548 min11:150 min24 Aug
Singapore07:41 → 08:1511:4348 min11:430 min24 Aug
Sydney10:41 → 11:1511:3448 min11:340 min24 Aug
Suva12:41 → 13:1511:450 min11:4548 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