Ruling · Skanda Ṣaṣṭhī · 2018

Thursday 13 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 449 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 Thursday 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 Friday 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 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec.

    2018-12-12T17:36:10Z → 2018-12-13T20:19:09Z

  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 26966 s

  5. 05

    Ruling

    Skanda Ṣaṣṭhī, Baoding, 2018: Thursday 13 December.

    confidence: determinate

Say it like this

In Baoding, Skanda Ṣaṣṭhī 2018 falls on Thursday 13 December. Ṣaṣṭhī runs from 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2018/skanda-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 13 Dec
compat-drikpanchangComparison profileThu 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 Angeles09:36 → 12:1911:2348 min11:2348 min12 Dec
Chicago11:36 → 14:1911:2032 min11:2148 min12 Dec
Jersey City12:36 → 15:1911:260 min11:2748 min13 Dec
Port of Spain13:36 → 16:1911:360 min11:3648 min13 Dec
London17:36 → 20:1911:300 min11:3148 min13 Dec
Durban19:36 → 22:1911:260 min11:2648 min13 Dec
Dubai21:36 → 00:1911:480 min11:4948 min13 Dec
Delhi23:06 → 01:4911:510 min11:5148 min13 Dec
Kolkata23:06 → 01:4911:060 min11:0748 min13 Dec
Singapore01:36 → 04:1912:340 min12:3548 min13 Dec
Sydney04:36 → 07:1912:250 min12:2548 min13 Dec
Suva06:36 → 09:1912:360 min12:3648 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