Ruling · Tila Caturthī · 2001

Sunday 28 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 563 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.

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

0 of 111 minutes covered

Evening of Sunday 28 January

Taken. The only evening Caturthī reaches.

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

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 04:47 on Sun 28 Jan to 06:51 on Mon 29 Jan.

    2001-01-27T20:47:17Z → 2001-01-28T22:51:04Z

  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 0 of 111 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 33770 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2001: Sunday 28 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2001 falls on Sunday 28 January. Caturthī runs from 04:47 on Sun 28 Jan to 06:51 on Mon 29 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2001/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 Angeles12:47 → 14:5117:19109 min17:200 min27 Jan
Chicago14:47 → 16:5116:59113 min17:010 min27 Jan
Jersey City15:47 → 17:5117:08112 min17:0942 min27 Jan
Port of Spain16:47 → 18:5118:0899 min18:0843 min27 Jan
London20:47 → 22:5116:410 min16:43120 min28 Jan
Durban22:47 → 00:5118:560 min18:5684 min28 Jan
Dubai00:47 → 02:5118:000 min18:00104 min28 Jan
Delhi02:17 → 04:2117:560 min17:57106 min28 Jan
Kolkata02:17 → 04:2117:210 min17:22103 min28 Jan
Singapore04:47 → 06:5119:190 min19:1996 min28 Jan
Sydney07:47 → 09:5120:040 min20:0381 min28 Jan
Suva08:47 → 10:5118:480 min18:4789 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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