Ruling · Tila Caturthī · 1902

Tuesday 11 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 39 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 Tuesday 11 February

Taken. The only evening Caturthī reaches.

17:50 sunsetpradoṣa ends 19:37
Caturthī begins 18:39:32
17:2617:5018:1418:3819:0219:2619:50

57 of 107 minutes covered, the last 57

Evening of Wednesday 12 February

Caturthī is absent from pradoṣa. Not taken.

17:51 sunsetpradoṣa ends 19:38
17:2717:5118:1518:3919:0319:2719:51

0 of 107 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 18:40 on Tue 11 Feb to 17:12 on Wed 12 Feb.

    1902-02-11T10:39:33Z → 1902-02-12T09:11:55Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:50–19:37 on the 11th, 17:51–19:38 on the 12th.

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 57 of 107 minutes on the 11th and 0 of 107 on the 12th.

    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 2325 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1902: Tuesday 11 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1902 falls on Tuesday 11 February. Caturthī runs from 18:40 on Tue 11 Feb to 17:12 on Wed 12 Feb and covers 57 of 107 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1902/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 11 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 11 Feb
compat-drikpanchangComparison profileTue 11 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 11thCoveredSunset 12thCoveredRuled
Los Angeles02:40 → 01:1217:32105 min17:330 min11 Feb
Chicago04:40 → 03:1217:18109 min17:190 min11 Feb
Jersey City05:40 → 04:1217:25108 min17:260 min11 Feb
Port of Spain06:40 → 05:1218:1398 min18:130 min11 Feb
London10:40 → 09:1217:06114 min17:080 min11 Feb
Durban12:10 → 10:4218:1786 min18:170 min11 Feb
Dubai14:21 → 12:5317:51102 min17:510 min11 Feb
Delhi16:01 → 14:3317:58103 min17:590 min11 Feb
Kolkata16:01 → 14:3317:21101 min17:220 min11 Feb
Singapore17:35 → 16:0718:1695 min18:160 min11 Feb
Sydney20:40 → 19:1218:530 min18:5220 min12 Feb
Suva22:35 → 21:0718:380 min18:3890 min12 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

About Ahargaṇa