Ruling · Tila Caturthī · 1908

Wednesday 5 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 484 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 Tuesday 4 February

Caturthī is absent from pradoṣa. Not taken.

17:41 sunsetpradoṣa ends 19:30
17:1717:4118:0518:2918:5319:1719:41

0 of 110 minutes covered

Evening of Wednesday 5 February

Taken. The only evening Caturthī reaches.

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

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 06:12 on Wed 5 Feb to 03:35 on Thu 6 Feb.

    1908-02-04T22:11:40Z → 1908-02-05T19:35:20Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:41–19:30 on the 4th, 17:42–19:31 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 110 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 29038 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1908: Wednesday 5 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1908 falls on Wednesday 5 February. Caturthī runs from 06:12 on Wed 5 Feb to 03:35 on Thu 6 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1908/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 5 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 5 Feb
compat-drikpanchangComparison profileWed 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 Angeles14:12 → 11:3517:25107 min17:260 min4 Feb
Chicago16:12 → 13:3517:08111 min17:090 min4 Feb
Jersey City17:12 → 14:3517:16110 min17:170 min4 Feb
Port of Spain18:12 → 15:3518:1198 min18:110 min4 Feb
London22:12 → 19:3516:530 min16:55117 min5 Feb
Durban00:12 → 21:3518:530 min18:5285 min5 Feb
Dubai01:53 → 23:1617:450 min17:46103 min5 Feb
Delhi03:42 → 01:0518:010 min18:02105 min5 Feb
Kolkata03:42 → 01:0517:260 min17:26102 min5 Feb
Singapore05:12 → 02:3518:200 min18:2096 min5 Feb
Sydney08:12 → 05:3518:590 min18:5983 min5 Feb
Suva10:07 → 07:3018:410 min18:4189 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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