Ruling · Tila Caturthī · 1928

Thursday 26 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 192 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 Wednesday 25 January

Caturthī is absent from pradoṣa. Not taken.

17:29 sunsetpradoṣa ends 19:22
17:0517:2917:5318:1718:4119:0519:2919:53

0 of 112 minutes covered

Evening of Thursday 26 January

Taken. The only evening Caturthī reaches.

17:31 sunsetpradoṣa ends 19:23
17:0717:3117:5518:1918:4319:0719:3119:55

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 00:28 on Thu 26 Jan to 22:35 on Thu 26 Jan.

    1928-01-25T16:27:43Z → 1928-01-26T14:34:58Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:29–19:22 on the 25th, 17:31–19:23 on the 26th.

    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 112 minutes on the 25th and 112 of 112 on the 26th.

    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 11544 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1928: Thursday 26 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1928 falls on Thursday 26 January. Caturthī runs from 00:28 on Thu 26 Jan to 22:35 on Thu 26 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1928/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 26 Jan
compat-drikpanchangComparison profileThu 26 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 25thCoveredSunset 26thCoveredRuled
Los Angeles08:28 → 06:3517:15109 min17:160 min25 Jan
Chicago10:28 → 08:3516:55114 min16:570 min25 Jan
Jersey City11:28 → 09:3517:04113 min17:050 min25 Jan
Port of Spain12:28 → 10:3518:0799 min18:070 min25 Jan
London16:28 → 14:3516:35122 min16:370 min25 Jan
Durban18:28 → 16:3518:5883 min18:580 min25 Jan
Dubai20:28 → 18:3517:570 min17:5837 min26 Jan
Delhi21:58 → 20:0517:530 min17:54106 min26 Jan
Kolkata21:58 → 20:0517:190 min17:20104 min26 Jan
Singapore23:28 → 21:3518:180 min18:1996 min26 Jan
Sydney02:28 → 00:3519:060 min19:0581 min26 Jan
Suva04:28 → 02:3518:480 min18:4888 min26 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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