Ruling · Tila Caturthī (Kunda Caturthī) · 2027

Wednesday 10 February

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 380 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Tuesday 9 February

Caturthī is absent from pradoṣa. Not taken.

18:19 sunsetpradoṣa ends 20:01
17:5518:1918:4319:0719:3119:5520:19

0 of 102 minutes covered

Evening of Wednesday 10 February

Taken. The only evening Caturthī reaches.

18:20 sunsetpradoṣa ends 20:01
17:5618:2018:4419:0819:3219:5620:20

102 of 102 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 02:20 on Wed 10 Feb to 03:05 on Thu 11 Feb.

    2027-02-09T20:50:18Z → 2027-02-10T21:35:02Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:19–20:01 on the 9th, 18:20–20:01 on the 10th.

    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 102 minutes on the 9th and 102 of 102 on the 10th.

    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 22772 s

  5. 05

    Ruling

    Tila Caturthī, Ujjain, 2027: Wednesday 10 February.

    confidence: determinate

Say it like this

In Ujjain, Tila Caturthī 2027 falls on Wednesday 10 February. Caturthī runs from 02:20 on Wed 10 Feb to 03:05 on Thu 11 Feb and covers all of pradoṣa that evening.

ahargana.org/ujjain/festivals/2027/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 10 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 10 Feb
compat-drikpanchangComparison profileWed 10 Feb
No institution has a recorded ruling for Ujjain.

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 9thCoveredSunset 10thCoveredRuled
Los Angeles12:50 → 13:3517:31106 min17:320 min9 Feb
Chicago14:50 → 15:3517:16109 min17:170 min9 Feb
Jersey City15:50 → 16:3517:23108 min17:250 min9 Feb
Port of Spain16:50 → 17:3518:1298 min18:130 min9 Feb
London20:50 → 21:3517:040 min17:06114 min10 Feb
Durban22:50 → 23:3518:480 min18:4786 min10 Feb
Dubai00:50 → 01:3518:080 min18:09102 min10 Feb
Delhi02:20 → 03:0518:060 min18:07104 min10 Feb
Kolkata02:20 → 03:0517:290 min17:30102 min10 Feb
Singapore04:50 → 05:3519:210 min19:2195 min10 Feb
Sydney07:50 → 08:3519:540 min19:5384 min10 Feb
Suva08:50 → 09:3518:440 min18:4390 min10 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