Ruling · Tila Caturthī · 1969

Tuesday 21 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 466 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 Monday 20 January

Caturthī is absent from pradoṣa. Not taken.

17:25 sunsetpradoṣa ends 19:18
17:0117:2517:4918:1318:3719:0119:2519:49

0 of 113 minutes covered

Evening of Tuesday 21 January

Taken. The only evening Caturthī reaches.

17:26 sunsetpradoṣa ends 19:19
17:0217:2617:5018:1418:3819:0219:2619:50

113 of 113 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 04:35 on Tue 21 Jan to 03:05 on Wed 22 Jan.

    1969-01-20T20:35:13Z → 1969-01-21T19:05:03Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:25–19:18 on the 20th, 17:26–19:19 on the 21st.

    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 20th and 113 of 113 on the 21st.

    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 27966 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1969: Tuesday 21 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1969 falls on Tuesday 21 January. Caturthī runs from 04:35 on Tue 21 Jan to 03:05 on Wed 22 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1969/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 21 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 21 Jan
compat-drikpanchangComparison profileTue 21 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 20thCoveredSunset 21stCoveredRuled
Los Angeles12:35 → 11:0517:11110 min17:120 min20 Jan
Chicago14:35 → 13:0516:50115 min16:520 min20 Jan
Jersey City15:35 → 14:0516:59114 min17:000 min20 Jan
Port of Spain16:35 → 15:0518:0599 min18:050 min20 Jan
London21:35 → 20:0517:280 min17:30123 min21 Jan
Durban22:35 → 21:0518:590 min18:5982 min21 Jan
Dubai00:35 → 23:0517:540 min17:55105 min21 Jan
Delhi02:05 → 00:3517:500 min17:51107 min21 Jan
Kolkata02:05 → 00:3517:160 min17:17104 min21 Jan
Singapore04:05 → 02:3518:470 min18:4796 min21 Jan
Sydney06:35 → 05:0519:070 min19:0780 min21 Jan
Suva08:35 → 07:0518:480 min18:4888 min21 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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