Ruling · Śītalāṣṭamī · 2002

Thursday 4 April

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 255 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 Thursday 4 April

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:44  13:32 madhyāhna ends
11:5612:2012:4413:0813:3213:5614:20

48 of 48 minutes covered

Midday of Friday 5 April

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:43  13:31 madhyāhna ends
11:5512:1912:4313:0713:3113:5514:19

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 07:41 on Thu 4 Apr to 08:28 on Fri 5 Apr.

    2002-04-04T03:10:37Z → 2002-04-05T03:58:28Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:44–13:32 on the 4th, 12:43–13:31 on the 5th.

    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 4th and 0 of 48 on the 5th.

    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 15294 s

  5. 05

    Ruling

    Śītalāṣṭamī, Tehran, 2002: Thursday 4 April.

    confidence: determinate

Say it like this

In Tehran, Śītalāṣṭamī 2002 falls on Thursday 4 April. Aṣṭamī runs from 07:41 on Thu 4 Apr to 08:28 on Fri 5 Apr and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2002/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 4 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 4 Apr
compat-drikpanchangComparison profileThu 4 Apr
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/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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles19:11 → 19:5811:3248 min11:320 min4 Apr
Chicago21:11 → 21:5811:3048 min11:300 min4 Apr
Jersey City22:11 → 22:5811:3648 min11:350 min4 Apr
Port of Spain23:11 → 23:5811:4548 min11:450 min4 Apr
London04:11 → 04:5812:4048 min12:400 min4 Apr
Durban05:11 → 05:5811:3548 min11:340 min4 Apr
Dubai07:11 → 07:5811:5848 min11:580 min4 Apr
Delhi08:41 → 09:2812:0048 min12:000 min4 Apr
Kolkata08:41 → 09:2811:1648 min11:160 min4 Apr
Singapore11:11 → 11:5812:4448 min12:430 min4 Apr
Sydney13:11 → 13:5811:340 min11:3448 min5 Apr
Suva15:11 → 15:5811:450 min11:4548 min5 Apr
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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