Ruling · Tila Caturthī · 1900

Saturday 3 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 17 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 Friday 2 February

Caturthī is absent from pradoṣa. Not taken.

17:45 sunsetpradoṣa ends 19:35
17:2117:4518:0918:3318:5719:2119:45

0 of 110 minutes covered

Evening of Saturday 3 February

Taken. The only evening Caturthī reaches.

17:46 sunsetpradoṣa ends 19:35
Caturthī ends 19:19:40
17:2217:4618:1018:3418:5819:2219:46

93 of 110 minutes covered, the first 93

Caturthī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 22:33 on Fri 2 Feb to 19:19 on Sat 3 Feb.

    1900-02-02T14:27:48Z → 1900-02-03T11:13:58Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:45–19:35 on the 2nd, 17:46–19:35 on the 3rd.

    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 2nd and 93 of 110 on the 3rd.

    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 991 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1900: Saturday 3 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1900 falls on Saturday 3 February. Caturthī runs from 22:33 on Fri 2 Feb to 19:19 on Sat 3 Feb and covers 93 of 110 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1900/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 3 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 3 Feb
compat-drikpanchangComparison profileSat 3 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 2ndCoveredSunset 3rdCoveredRuled
Los Angeles06:28 → 03:1417:24107 min17:250 min2 Feb
Chicago08:28 → 05:1417:07111 min17:080 min2 Feb
Jersey City09:28 → 06:1417:15111 min17:160 min2 Feb
Port of Spain10:28 → 07:1418:1099 min18:110 min2 Feb
London14:28 → 11:1416:51118 min16:530 min2 Feb
Durban15:58 → 12:4418:2484 min18:230 min2 Feb
Dubai18:09 → 14:5517:4580 min17:450 min2 Feb
Delhi19:49 → 16:3517:520 min17:520 min2 Feb
Kolkata19:49 → 16:3517:160 min17:170 min2 Feb
Singapore21:23 → 18:0918:150 min18:150 min2 Feb
Sydney00:28 → 21:1419:000 min18:5983 min3 Feb
Suva02:23 → 23:0918:420 min18:4189 min3 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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