Ruling · Skanda Ṣaṣṭhī · 1980

Saturday 13 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 671 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Saturday 13 December

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Sunday 14 December

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 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 00:37 on Sat 13 Dec to 23:49 on Sat 13 Dec.

    1980-12-12T16:37:29Z → 1980-12-13T15:49:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 13th, 11:49–12:37 on the 14th.

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

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.

    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 40249 s

  5. 05

    Ruling

    Skanda Ṣaṣṭhī, Baoding, 1980: Saturday 13 December.

    confidence: determinate

Say it like this

In Baoding, Skanda Ṣaṣṭhī 1980 falls on Saturday 13 December. Ṣaṣṭhī runs from 00:37 on Sat 13 Dec to 23:49 on Sat 13 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1980/skanda-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 13 Dec
compat-drikpanchangComparison profileSat 13 Dec
No institution has a recorded ruling for Baoding.

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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles08:37 → 07:4911:2348 min11:230 min12 Dec
Chicago10:37 → 09:4911:2148 min11:210 min12 Dec
Jersey City11:37 → 10:4911:2637 min11:270 min12 Dec
Port of Spain12:37 → 11:4911:360 min11:3613 min13 Dec
London16:37 → 15:4911:300 min11:3148 min13 Dec
Durban18:37 → 17:4911:260 min11:2648 min13 Dec
Dubai20:37 → 19:4911:490 min11:4948 min13 Dec
Delhi22:07 → 21:1911:510 min11:5148 min13 Dec
Kolkata22:07 → 21:1911:060 min11:0748 min13 Dec
Singapore00:07 → 23:1912:040 min12:0548 min13 Dec
Sydney03:37 → 02:4912:250 min12:2548 min13 Dec
Suva04:37 → 03:4911:360 min11:3648 min13 Dec
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