Ruling · Tila Caturthī · 2065

Monday 9 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 59 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 Sunday 8 February

Caturthī is absent from pradoṣa. Not taken.

17:48 sunsetpradoṣa ends 19:35
17:2417:4818:1218:3619:0019:2419:48

0 of 108 minutes covered

Evening of Monday 9 February

Taken. The only evening Caturthī reaches.

17:49 sunsetpradoṣa ends 19:36
17:2517:4918:1318:3719:0119:2519:49

108 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 20:34 on Sun 8 Feb to 22:25 on Mon 9 Feb.

    2065-02-08T12:34:01Z → 2065-02-09T14:25:08Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:48–19:35 on the 8th, 17:49–19:36 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 0 of 108 minutes on the 8th and 108 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 3514 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2065: Monday 9 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2065 falls on Monday 9 February. Caturthī runs from 20:34 on Sun 8 Feb to 22:25 on Mon 9 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2065/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 9 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 9 Feb
compat-drikpanchangComparison profileMon 9 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 Angeles04:34 → 06:2517:31106 min17:320 min8 Feb
Chicago06:34 → 08:2517:15109 min17:170 min8 Feb
Jersey City07:34 → 09:2517:23109 min17:240 min8 Feb
Port of Spain08:34 → 10:2518:1298 min18:130 min8 Feb
London12:34 → 14:2517:03115 min17:050 min8 Feb
Durban14:34 → 16:2518:4886 min18:480 min8 Feb
Dubai16:34 → 18:2518:08103 min18:0916 min8 Feb
Delhi18:04 → 19:5518:06104 min18:07104 min8 Feb
Kolkata18:04 → 19:5517:2967 min17:30102 min9 Feb
Singapore20:34 → 22:2519:2122 min19:2195 min9 Feb
Sydney23:34 → 01:2519:540 min19:5384 min9 Feb
Suva00:34 → 02:2518:440 min18:4390 min9 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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