Ruling · Tila Caturthī · 1972

Wednesday 19 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 153 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 Wednesday 19 January

Taken. The only evening Caturthī reaches.

17:23 sunsetpradoṣa ends 19:17
16:5917:2317:4718:1118:3518:5919:2319:47

113 of 113 minutes covered

Evening of Thursday 20 January

Caturthī is absent from pradoṣa. Not taken.

17:24 sunsetpradoṣa ends 19:17
17:0017:2417:4818:1218:3619:0019:2419:48

0 of 113 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 14:51 on Wed 19 Jan to 12:56 on Thu 20 Jan.

    1972-01-19T06:50:33Z → 1972-01-20T04:55:44Z

  2. 02

    Kāla

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

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 113 of 113 minutes on the 19th and 0 of 113 on the 20th.

    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 9151 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1972: Wednesday 19 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1972 falls on Wednesday 19 January. Caturthī runs from 14:51 on Wed 19 Jan to 12:56 on Thu 20 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1972/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 19 Jan
compat-drikpanchangComparison profileWed 19 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 19thCoveredSunset 20thCoveredRuled
Los Angeles22:51 → 20:5617:10110 min17:110 min19 Jan
Chicago00:51 → 22:5616:48115 min16:500 min19 Jan
Jersey City01:51 → 23:5616:57115 min16:580 min19 Jan
Port of Spain02:51 → 00:5618:0499 min18:050 min19 Jan
London06:51 → 04:5616:25124 min16:270 min19 Jan
Durban08:51 → 06:5619:0082 min19:000 min19 Jan
Dubai10:51 → 08:5617:53106 min17:540 min19 Jan
Delhi12:21 → 10:2617:48107 min17:490 min19 Jan
Kolkata12:21 → 10:2617:15105 min17:160 min19 Jan
Singapore14:21 → 12:2618:4796 min18:470 min19 Jan
Sydney17:51 → 15:5620:0879 min20:080 min19 Jan
Suva18:51 → 16:5618:4886 min18:480 min19 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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