Ruling · Śītalāṣṭamī · 1908

Wednesday 25 March

Determinatein Riyadh, under the Rashtriya Panchang method. Clear of every threshold by 436 minutes.

Decide it for

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two middays

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

Midday of Wednesday 25 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

48 of 48 minutes covered

Midday of Thursday 26 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 04:25 on Wed 25 Mar to 02:44 on Thu 26 Mar.

    1908-03-25T01:19:14Z → 1908-03-25T23:38:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 25th, 11:41–12:29 on the 26th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 26174 s

  5. 05

    Ruling

    Śītalāṣṭamī, Riyadh, 1908: Wednesday 25 March.

    confidence: determinate

Say it like this

In Riyadh, Śītalāṣṭamī 1908 falls on Wednesday 25 March. Aṣṭamī runs from 04:25 on Wed 25 Mar to 02:44 on Thu 26 Mar and covers all of madhyāhna that midday.

ahargana.org/riyadh/festivals/1908/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 25 Mar
Ahargaṇa, classicalDisc centre, no refractionWed 25 Mar
compat-drikpanchangComparison profileWed 25 Mar
No institution has a recorded ruling for Riyadh.

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

The rule, as data

/rules/shitalashtami · ruleset 2026.3-draft

Month
Phālguna, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“K 8 Sitalastami, (purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles17:19 → 15:3811:3548 min11:350 min25 Mar
Chicago19:19 → 17:3811:3348 min11:330 min25 Mar
Jersey City20:19 → 18:3811:3948 min11:380 min25 Mar
Port of Spain21:19 → 19:3811:4848 min11:480 min25 Mar
London01:19 → 23:3811:4348 min11:430 min25 Mar
Durban03:19 → 01:3811:3848 min11:380 min25 Mar
Dubai05:00 → 03:1911:4248 min11:420 min25 Mar
Delhi06:49 → 05:0812:0348 min12:030 min25 Mar
Kolkata06:49 → 05:0811:1948 min11:190 min25 Mar
Singapore08:19 → 06:3811:4748 min11:470 min25 Mar
Sydney11:19 → 09:3811:3748 min11:370 min25 Mar
Suva13:14 → 11:3311:430 min11:430 min26 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shitalashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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