Ruling · Tila Caturthī · 1925

Tuesday 27 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 198 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 Tuesday 27 January

Taken. The only evening Caturthī reaches.

17:33 sunsetpradoṣa ends 19:24
17:0917:3317:5718:2118:4519:0919:3319:57

112 of 112 minutes covered

Evening of Wednesday 28 January

Caturthī is absent from pradoṣa. Not taken.

17:34 sunsetpradoṣa ends 19:25
17:1017:3417:5818:2218:4619:1019:3419:58

0 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 14:15 on Tue 27 Jan to 12:33 on Wed 28 Jan.

    1925-01-27T06:14:37Z → 1925-01-28T04:32:38Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:33–19:24 on the 27th, 17:34–19:25 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 112 of 112 minutes on the 27th and 0 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 11882 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1925: Tuesday 27 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1925 falls on Tuesday 27 January. Caturthī runs from 14:15 on Tue 27 Jan to 12:33 on Wed 28 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1925/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 27 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 27 Jan
compat-drikpanchangComparison profileTue 27 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 Angeles22:15 → 20:3317:18109 min17:190 min27 Jan
Chicago00:15 → 22:3316:59113 min17:000 min27 Jan
Jersey City01:15 → 23:3317:07112 min17:080 min27 Jan
Port of Spain02:15 → 00:3318:0899 min18:080 min27 Jan
London06:15 → 04:3316:40121 min16:420 min27 Jan
Durban08:15 → 06:3318:5783 min18:560 min27 Jan
Dubai10:15 → 08:3317:59105 min18:000 min27 Jan
Delhi11:45 → 10:0317:56106 min17:560 min27 Jan
Kolkata11:45 → 10:0317:21104 min17:220 min27 Jan
Singapore13:15 → 11:3318:1996 min18:190 min27 Jan
Sydney16:15 → 14:3319:0481 min19:040 min27 Jan
Suva18:15 → 16:3318:4888 min18:480 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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