Ruling · Tila Caturthī · 2091

Tuesday 23 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 527 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 Monday 22 January

Caturthī is absent from pradoṣa. Not taken.

17:28 sunsetpradoṣa ends 19:20
17:0417:2817:5218:1618:4019:0419:2819:52

0 of 113 minutes covered

Evening of Tuesday 23 January

Taken. The only evening Caturthī reaches.

17:29 sunsetpradoṣa ends 19:21
17:0517:2917:5318:1718:4119:0519:2919:53

112 of 112 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 04:07 on Tue 23 Jan to 06:22 on Wed 24 Jan.

    2091-01-22T20:07:10Z → 2091-01-23T22:21:41Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:28–19:20 on the 22nd, 17:29–19:21 on the 23rd.

    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 113 minutes on the 22nd and 112 of 112 on the 23rd.

    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 31613 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2091: Tuesday 23 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2091 falls on Tuesday 23 January. Caturthī runs from 04:07 on Tue 23 Jan to 06:22 on Wed 24 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2091/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 23 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 23 Jan
compat-drikpanchangComparison profileTue 23 Jan
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 22ndCoveredSunset 23rdCoveredRuled
Los Angeles12:07 → 14:2217:14110 min17:150 min22 Jan
Chicago14:07 → 16:2216:53114 min16:550 min22 Jan
Jersey City15:07 → 17:2217:02114 min17:0318 min22 Jan
Port of Spain16:07 → 18:2218:0699 min18:0715 min22 Jan
London20:07 → 22:2216:320 min16:34122 min23 Jan
Durban22:07 → 00:2218:590 min18:5883 min23 Jan
Dubai00:07 → 02:2217:560 min17:57105 min23 Jan
Delhi01:37 → 03:5217:520 min17:53107 min23 Jan
Kolkata01:37 → 03:5217:180 min17:19104 min23 Jan
Singapore04:07 → 06:2219:180 min19:1896 min23 Jan
Sydney07:07 → 09:2220:060 min20:0680 min23 Jan
Suva08:07 → 10:2218:480 min18:4888 min23 Jan
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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