Ruling · Tila Caturthī (Kunda Caturthī) · 2012

Thursday 26 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 75 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Thursday 26 January

Taken. The only evening Caturthī reaches.

17:31 sunsetpradoṣa ends 19:23
17:0717:3117:5518:1918:4319:0719:3119:55

112 of 112 minutes covered

Evening of Friday 27 January

Caturthī is absent from pradoṣa. Not taken.

17:32 sunsetpradoṣa ends 19:24
17:0817:3217:5618:2018:4419:0819:3219:56

0 of 112 minutes covered

Caturthī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 15:12 on Thu 26 Jan to 16:17 on Fri 27 Jan.

    2012-01-26T07:11:44Z → 2012-01-27T08:17:24Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:31–19:23 on the 26th, 17:32–19:24 on the 27th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 112 of 112 minutes on the 26th and 0 of 112 on the 27th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 4496 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2012: Thursday 26 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2012 falls on Thursday 26 January. Caturthī runs from 15:12 on Thu 26 Jan to 16:17 on Fri 27 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2012/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 26 Jan
compat-drikpanchangComparison profileThu 26 Jan
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/tila-chaturthi · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 105

“S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīSunset 26thCoveredSunset 27thCoveredRuled
Los Angeles23:12 → 00:1717:17109 min17:180 min26 Jan
Chicago01:12 → 02:1716:57113 min16:590 min26 Jan
Jersey City02:12 → 03:1717:06113 min17:070 min26 Jan
Port of Spain03:12 → 04:1718:0799 min18:080 min26 Jan
London07:12 → 08:1716:38121 min16:400 min26 Jan
Durban09:12 → 10:1718:5783 min18:570 min26 Jan
Dubai11:12 → 12:1717:58105 min17:590 min26 Jan
Delhi12:42 → 13:4717:54106 min17:550 min26 Jan
Kolkata12:42 → 13:4717:20104 min17:210 min26 Jan
Singapore15:12 → 16:1719:1996 min19:190 min26 Jan
Sydney18:12 → 19:1720:0581 min20:040 min26 Jan
Suva19:12 → 20:1718:4864 min18:4888 min27 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
tila-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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