Ruling · Mahāṣṭamī (Durgāṣṭamī) · 2016

Sunday 9 October

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 429 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 Saturday 8 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:28  12:16 madhyāhna ends
10:4011:0411:2811:5212:1612:4013:04

0 of 48 minutes covered

Midday of Sunday 9 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:27  12:15 madhyāhna ends
10:3911:0311:2711:5112:1512:3913:03

48 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 19:25 on Sat 8 Oct to 20:31 on Sun 9 Oct.

    2016-10-08T15:54:41Z → 2016-10-09T17:01:09Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 8th, 11:27–12:15 on the 9th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: paraviddha → only-day · margin 25751 s

  5. 05

    Ruling

    Mahāṣṭamī, Tehran, 2016: Sunday 9 October.

    confidence: determinate

Say it like this

In Tehran, Mahāṣṭamī (Durga Ashtami) 2016 falls on Sunday 9 October. Aṣṭamī runs from 19:25 on Sat 8 Oct to 20:31 on Sun 9 Oct and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2016/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 9 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 9 Oct
compat-drikpanchangComparison profileSun 9 Oct
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/mahashtami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 8 Mahastami (paraviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles08:55 → 10:0112:1648 min12:160 min8 Oct
Chicago10:55 → 12:0112:1448 min12:130 min8 Oct
Jersey City11:55 → 13:0112:1948 min12:1942 min9 Oct
Port of Spain11:55 → 13:0111:2923 min11:2948 min9 Oct
London16:55 → 18:0112:230 min12:2348 min9 Oct
Durban17:55 → 19:0111:200 min11:1948 min9 Oct
Dubai19:55 → 21:0111:420 min11:4248 min9 Oct
Delhi21:25 → 22:3111:440 min11:4448 min9 Oct
Kolkata21:25 → 22:3111:000 min11:0048 min9 Oct
Singapore23:55 → 01:0112:280 min12:2848 min9 Oct
Sydney02:55 → 04:0112:190 min12:1948 min9 Oct
Suva03:55 → 05:0111:300 min11:3048 min9 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa