Ruling · Skanda Ṣaṣṭhī · 1925

Saturday 21 November

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 504 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 Friday 20 November

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

0 of 48 minutes covered

Midday of Saturday 21 November

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

48 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 22:48 on Fri 20 Nov to 20:33 on Sat 21 Nov.

    1925-11-20T19:23:18Z → 1925-11-21T17:07:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 20th, 11:21–12:09 on the 21st.

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

  3. 03

    Rule

    Ṣaṣṭhī 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: purvaviddha → only-day · margin 30234 s

  5. 05

    Ruling

    Skanda Ṣaṣṭhī, Tehran, 1925: Saturday 21 November.

    confidence: determinate

Say it like this

In Tehran, Skanda Ṣaṣṭhī 1925 falls on Saturday 21 November. Ṣaṣṭhī runs from 22:48 on Fri 20 Nov to 20:33 on Sat 21 Nov and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/1925/skanda-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 21 Nov
compat-drikpanchangComparison profileSat 21 Nov
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/skanda-shashthi · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Ṣaṣṭhī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceṢaṣṭhīMadhyāhna 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles11:23 → 09:0811:1539 min11:150 min20 Nov
Chicago13:23 → 11:0811:120 min11:120 min21 Nov
Jersey City14:23 → 12:0811:180 min11:1848 min21 Nov
Port of Spain15:23 → 13:0811:280 min11:2848 min21 Nov
London19:23 → 17:0811:220 min11:2248 min21 Nov
Durban21:23 → 19:0811:180 min11:1848 min21 Nov
Dubai23:23 → 21:0811:400 min11:4048 min21 Nov
Delhi00:53 → 22:3811:430 min11:4348 min21 Nov
Kolkata00:53 → 22:3810:580 min10:5848 min21 Nov
Singapore02:23 → 00:0811:260 min11:2648 min21 Nov
Sydney05:23 → 03:0811:170 min11:1748 min21 Nov
Suva07:23 → 05:0811:280 min11:2848 min21 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
skanda-shashthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa