Ruling · Tila Caturthī (Kunda Caturthī) · 2021

Monday 15 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 529 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 Sunday 14 February

Caturthī is absent from pradoṣa. Not taken.

17:54 sunsetpradoṣa ends 19:40
17:3017:5418:1818:4219:0619:3019:54

0 of 106 minutes covered

Evening of Monday 15 February

Taken. The only evening Caturthī reaches.

17:55 sunsetpradoṣa ends 19:41
17:3117:5518:1918:4319:0719:3119:55

106 of 106 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 04:29 on Mon 15 Feb to 06:07 on Tue 16 Feb.

    2021-02-14T20:29:28Z → 2021-02-15T22:07:26Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:54–19:40 on the 14th, 17:55–19:41 on the 15th.

    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 106 minutes on the 14th and 106 of 106 on the 15th.

    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 31761 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2021: Monday 15 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2021 falls on Monday 15 February. Caturthī runs from 04:29 on Mon 15 Feb to 06:07 on Tue 16 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2021/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 15 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 15 Feb
compat-drikpanchangComparison profileMon 15 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 14thCoveredSunset 15thCoveredRuled
Los Angeles12:29 → 14:0717:36104 min17:370 min14 Feb
Chicago14:29 → 16:0717:23107 min17:240 min14 Feb
Jersey City15:29 → 17:0717:30107 min17:310 min14 Feb
Port of Spain16:29 → 18:0718:1498 min18:140 min14 Feb
London20:29 → 22:0717:140 min17:16112 min15 Feb
Durban22:29 → 00:0718:440 min18:4387 min15 Feb
Dubai00:29 → 02:0718:120 min18:13101 min15 Feb
Delhi01:59 → 03:3718:100 min18:11102 min15 Feb
Kolkata01:59 → 03:3717:320 min17:33101 min15 Feb
Singapore04:29 → 06:0719:210 min19:2195 min15 Feb
Sydney07:29 → 09:0719:490 min19:4886 min15 Feb
Suva08:29 → 10:0718:410 min18:4191 min15 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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