Ruling · Tila Caturthī · 2015

Friday 23 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 397 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 Friday 23 January

Taken. The only evening Caturthī reaches.

17:28 sunsetpradoṣa ends 19:20
17:0417:2817:5218:1618:4019:0419:2819:52

112 of 112 minutes covered

Evening of Saturday 24 January

Caturthī is absent from pradoṣa. Not taken.

17:29 sunsetpradoṣa ends 19:21
17:0517:2917:5318:1718:4119:0519:2919:53

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 10:51 on Fri 23 Jan to 07:46 on Sat 24 Jan.

    2015-01-23T02:51:07Z → 2015-01-23T23:45:58Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:28–19:20 on the 23rd, 17:29–19:21 on the 24th.

    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 23rd and 0 of 112 on the 24th.

    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 23816 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2015: Friday 23 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2015 falls on Friday 23 January. Caturthī runs from 10:51 on Fri 23 Jan to 07:46 on Sat 24 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2015/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 23 Jan
compat-drikpanchangComparison profileFri 23 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 23rdCoveredSunset 24thCoveredRuled
Los Angeles18:51 → 15:4617:140 min17:150 min22 Jan
Chicago20:51 → 17:4616:5452 min16:550 min23 Jan
Jersey City21:51 → 18:4617:02104 min17:040 min23 Jan
Port of Spain22:51 → 19:4618:0699 min18:070 min23 Jan
London02:51 → 23:4616:33122 min16:350 min23 Jan
Durban04:51 → 01:4618:5883 min18:580 min23 Jan
Dubai06:51 → 03:4617:56105 min17:570 min23 Jan
Delhi08:21 → 05:1617:52107 min17:530 min23 Jan
Kolkata08:21 → 05:1617:18104 min17:190 min23 Jan
Singapore10:51 → 07:4619:1896 min19:180 min23 Jan
Sydney13:51 → 10:4620:0680 min20:050 min23 Jan
Suva14:51 → 11:4618:4888 min18:480 min23 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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