Ruling · Tila Caturthī · 1906

Sunday 28 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 286 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 Saturday 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

Evening of Sunday 28 January

Taken. The only evening Caturthī reaches.

17:33 sunsetpradoṣa ends 19:25
17:0917:3317:5718:2118:4519:0919:3319:57

111 of 111 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 00:10 on Sun 28 Jan to 01:09 on Mon 29 Jan.

    1906-01-27T16:10:13Z → 1906-01-28T17:08:34Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:32–19:24 on the 27th, 17:33–19:25 on the 28th.

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 0 of 112 minutes on the 27th and 111 of 111 on the 28th.

    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 17184 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1906: Sunday 28 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1906 falls on Sunday 28 January. Caturthī runs from 00:10 on Sun 28 Jan to 01:09 on Mon 29 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1906/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 28 Jan
Ahargaṇa, classicalDisc centre, no refractionSun 28 Jan
compat-drikpanchangComparison profileSun 28 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 27thCoveredSunset 28thCoveredRuled
Los Angeles08:10 → 09:0917:18109 min17:190 min27 Jan
Chicago10:10 → 11:0916:58113 min17:000 min27 Jan
Jersey City11:10 → 12:0917:07113 min17:080 min27 Jan
Port of Spain12:10 → 13:0918:0899 min18:080 min27 Jan
London16:10 → 17:0916:39121 min16:4128 min27 Jan
Durban18:10 → 19:0918:5783 min18:5712 min27 Jan
Dubai19:51 → 20:5017:400 min17:41105 min28 Jan
Delhi21:40 → 22:3917:550 min17:56106 min28 Jan
Kolkata21:40 → 22:3917:210 min17:21103 min28 Jan
Singapore23:10 → 00:0918:190 min18:1996 min28 Jan
Sydney02:10 → 03:0919:040 min19:0481 min28 Jan
Suva04:05 → 05:0418:430 min18:4388 min28 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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