Ruling · Tila Caturthī · 2019

Friday 8 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 172 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 8 February

Taken. The only evening Caturthī reaches.

17:47 sunsetpradoṣa ends 19:35
17:2317:4718:1118:3518:5919:2319:47

108 of 108 minutes covered

Evening of Saturday 9 February

Caturthī is absent from pradoṣa. Not taken.

17:48 sunsetpradoṣa ends 19:36
17:2417:4818:1218:3619:0019:2419:48

0 of 108 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 12:48 on Fri 8 Feb to 14:56 on Sat 9 Feb.

    2019-02-08T04:48:11Z → 2019-02-09T06:56:02Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:47–19:35 on the 8th, 17:48–19:36 on the 9th.

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 108 of 108 minutes on the 8th and 0 of 108 on the 9th.

    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 10302 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2019: Friday 8 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2019 falls on Friday 8 February. Caturthī runs from 12:48 on Fri 8 Feb to 14:56 on Sat 9 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2019/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 8 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 8 Feb
compat-drikpanchangComparison profileFri 8 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 8thCoveredSunset 9thCoveredRuled
Los Angeles20:48 → 22:5617:30106 min17:310 min8 Feb
Chicago22:48 → 00:5617:14109 min17:160 min8 Feb
Jersey City23:48 → 01:5617:22109 min17:230 min8 Feb
Port of Spain00:48 → 02:5618:1298 min18:120 min8 Feb
London04:48 → 06:5617:02115 min17:040 min8 Feb
Durban06:48 → 08:5618:4986 min18:480 min8 Feb
Dubai08:48 → 10:5618:08103 min18:080 min8 Feb
Delhi10:18 → 12:2618:05104 min18:060 min8 Feb
Kolkata10:18 → 12:2617:29102 min17:290 min8 Feb
Singapore12:48 → 14:5619:2196 min19:210 min8 Feb
Sydney15:48 → 17:5619:5584 min19:540 min8 Feb
Suva16:48 → 18:5618:4490 min18:4412 min8 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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