Ruling · Tila Caturthī · 2005

Saturday 12 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 9 min 56 s.

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 11 February

Caturthī is absent from pradoṣa. Not taken.

17:50 sunsetpradoṣa ends 19:38
17:2617:5018:1418:3819:0219:2619:50

0 of 107 minutes covered

Evening of Saturday 12 February

Taken. The only evening Caturthī reaches.

17:52 sunsetpradoṣa ends 19:38
Caturthī ends 19:48:21
17:2817:5218:1618:4019:0419:2819:52

107 of 107 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 21:32 on Fri 11 Feb to 19:48 on Sat 12 Feb.

    2005-02-11T13:32:23Z → 2005-02-12T11:48:21Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:50–19:38 on the 11th, 17:52–19:38 on the 12th.

    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 107 minutes on the 11th and 107 of 107 on the 12th.

    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 596 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2005: Saturday 12 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2005 falls on Saturday 12 February. Caturthī runs from 21:32 on Fri 11 Feb to 19:48 on Sat 12 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2005/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 12 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 12 Feb
compat-drikpanchangComparison profileSat 12 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 11thCoveredSunset 12thCoveredRuled
Los Angeles05:32 → 03:4817:33105 min17:340 min11 Feb
Chicago07:32 → 05:4817:19108 min17:200 min11 Feb
Jersey City08:32 → 06:4817:26108 min17:270 min11 Feb
Port of Spain09:32 → 07:4818:1398 min18:130 min11 Feb
London13:32 → 11:4817:08114 min17:100 min11 Feb
Durban15:32 → 13:4818:4686 min18:460 min11 Feb
Dubai17:32 → 15:4818:10102 min18:110 min11 Feb
Delhi19:02 → 17:1818:0849 min18:090 min11 Feb
Kolkata19:02 → 17:1817:3110 min17:310 min11 Feb
Singapore21:32 → 19:4819:210 min19:2128 min12 Feb
Sydney00:32 → 22:4819:520 min19:5185 min12 Feb
Suva01:32 → 23:4818:430 min18:4290 min12 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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