Ruling · Vijayā Daśamī (Dussehra) · 2007

Sunday 21 October

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 130 minutes.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

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 20 October

Daśamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:25  12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01

0 of 48 minutes covered

Midday of Sunday 21 October

Taken. The only midday Daśamī reaches.

madhyāhna begins 11:25  12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Daśamī runs from 00:05 on Sun 21 Oct to 23:06 on Sun 21 Oct.

    2007-10-20T20:34:48Z → 2007-10-21T19:35:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 20th, 11:25–12:13 on the 21st.

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

  3. 03

    Rule

    Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.

    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: unstated → only-day · margin 7802 s

  5. 05

    Ruling

    Vijayā Daśamī, Tehran, 2007: Sunday 21 October.

    confidence: determinate

Say it like this

In Tehran, Vijayā Daśamī (Dussehra) 2007 falls on Sunday 21 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 00:05 on Sun 21 Oct to 23:06 on Sun 21 Oct and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2007/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 21 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 21 Oct
compat-drikpanchangComparison profileSun 21 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/vijaya-dashami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Daśamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
First
With Śravaṇa in the day time

“S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDaśamīMadhyāhna 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles13:35 → 12:3612:140 min12:1322 min20 Oct
Chicago15:35 → 14:3612:110 min12:1148 min20 Oct
Jersey City16:35 → 15:3612:170 min12:1748 min20 Oct
Port of Spain16:35 → 15:3611:270 min11:2748 min20 Oct
London21:35 → 20:3612:210 min12:2148 min21 Oct
Durban22:35 → 21:3611:170 min11:1748 min21 Oct
Dubai00:35 → 23:3611:390 min11:3948 min21 Oct
Delhi02:05 → 01:0611:420 min11:4248 min21 Oct
Kolkata02:05 → 01:0610:570 min10:5748 min21 Oct
Singapore04:35 → 03:3612:260 min12:2548 min21 Oct
Sydney06:35 → 05:3611:160 min11:1648 min21 Oct
Suva08:35 → 07:3611:270 min11:2748 min21 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vijaya-dashami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa