Ruling · Tila Caturthī · 1965

Friday 5 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 583 minutes.

Decide it for

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 Thursday 4 February

Caturthī is absent from pradoṣa. Not taken.

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

0 of 109 minutes covered

Evening of Friday 5 February

Taken. The only evening Caturthī reaches.

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

109 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 05:15 on Fri 5 Feb to 05:59 on Sat 6 Feb.

    1965-02-04T21:14:46Z → 1965-02-05T21:59:15Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:42–19:31 on the 4th, 17:43–19:32 on the 5th.

    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 109 minutes on the 4th and 109 of 109 on the 5th.

    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 35002 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1965: Friday 5 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1965 falls on Friday 5 February. Caturthī runs from 05:15 on Fri 5 Feb to 05:59 on Sat 6 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1965/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 5 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 5 Feb
compat-drikpanchangComparison profileFri 5 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 4thCoveredSunset 5thCoveredRuled
Los Angeles13:15 → 13:5917:26107 min17:270 min4 Feb
Chicago15:15 → 15:5917:09111 min17:110 min4 Feb
Jersey City16:15 → 16:5917:17110 min17:190 min4 Feb
Port of Spain17:15 → 17:5918:1198 min18:110 min4 Feb
London21:15 → 21:5916:550 min16:57117 min5 Feb
Durban23:15 → 23:5918:520 min18:5185 min5 Feb
Dubai01:15 → 01:5918:050 min18:06103 min5 Feb
Delhi02:45 → 03:2918:020 min18:03105 min5 Feb
Kolkata02:45 → 03:2917:260 min17:27102 min5 Feb
Singapore04:45 → 05:2918:500 min18:5096 min5 Feb
Sydney07:15 → 07:5918:580 min18:5783 min5 Feb
Suva09:15 → 09:5918:460 min18:4589 min5 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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