Ruling · Tila Caturthī · 2083

Thursday 21 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 427 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 Thursday 21 January

Taken. The only evening Caturthī reaches.

17:26 sunsetpradoṣa ends 19:19
17:0217:2617:5018:1418:3819:0219:2619:50

113 of 113 minutes covered

Evening of Friday 22 January

Caturthī is absent from pradoṣa. Not taken.

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

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 09:43 on Thu 21 Jan to 10:21 on Fri 22 Jan.

    2083-01-21T01:43:04Z → 2083-01-22T02:20:49Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:26–19:19 on the 21st, 17:28–19:20 on the 22nd.

    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 21st and 0 of 113 on the 22nd.

    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 25607 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2083: Thursday 21 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2083 falls on Thursday 21 January. Caturthī runs from 09:43 on Thu 21 Jan to 10:21 on Fri 22 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2083/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 21 Jan
compat-drikpanchangComparison profileThu 21 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 21stCoveredSunset 22ndCoveredRuled
Los Angeles17:43 → 18:2117:1368 min17:140 min20 Jan
Chicago19:43 → 20:2116:52115 min16:530 min21 Jan
Jersey City20:43 → 21:2117:01114 min17:020 min21 Jan
Port of Spain21:43 → 22:2118:0699 min18:060 min21 Jan
London01:43 → 02:2116:31123 min16:320 min21 Jan
Durban03:43 → 04:2118:5982 min18:590 min21 Jan
Dubai05:43 → 06:2117:55105 min17:560 min21 Jan
Delhi07:13 → 07:5117:51107 min17:520 min21 Jan
Kolkata07:13 → 07:5117:17104 min17:180 min21 Jan
Singapore09:43 → 10:2119:1796 min19:180 min21 Jan
Sydney12:43 → 13:2120:0780 min20:060 min21 Jan
Suva13:43 → 14:2118:4888 min18:480 min21 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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