Ruling · Tila Caturthī · 2090

Friday 3 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 512 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 3 February

Taken. The only evening Caturthī reaches.

17:42 sunsetpradoṣa ends 19:31
17:1817:4218:0618:3018:5419:1819:42

109 of 109 minutes covered

Evening of Saturday 4 February

Caturthī is absent from pradoṣa. Not taken.

17:43 sunsetpradoṣa ends 19:32
17:1917:4318:0718:3118:5519:1919:43

0 of 109 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 06:34 on Fri 3 Feb to 09:11 on Sat 4 Feb.

    2090-02-02T22:33:52Z → 2090-02-04T01:11:26Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:42–19:31 on the 3rd, 17:43–19:32 on the 4th.

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 109 of 109 minutes on the 3rd and 0 of 109 on the 4th.

    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 30694 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2090: Friday 3 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2090 falls on Friday 3 February. Caturthī runs from 06:34 on Fri 3 Feb to 09:11 on Sat 4 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2090/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 3 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 3 Feb
compat-drikpanchangComparison profileFri 3 Feb
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 2ndCoveredSunset 4thCoveredRuled
Los Angeles14:34 → 17:1117:25107 min17:270 min2 Feb
Chicago16:34 → 19:1117:08111 min17:100 min2 Feb
Jersey City17:34 → 20:1117:1692 min17:180 min3 Feb
Port of Spain18:34 → 21:1118:1175 min18:110 min3 Feb
London22:34 → 01:1116:520 min16:560 min3 Feb
Durban00:34 → 03:1118:530 min18:510 min3 Feb
Dubai02:34 → 05:1118:040 min18:060 min3 Feb
Delhi04:04 → 06:4118:010 min18:030 min3 Feb
Kolkata04:04 → 06:4117:260 min17:270 min3 Feb
Singapore06:34 → 09:1119:200 min19:200 min3 Feb
Sydney09:34 → 12:1119:590 min19:580 min3 Feb
Suva10:34 → 13:1118:460 min18:450 min3 Feb
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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