Ruling · Tila Caturthī · 2028

Sunday 30 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 472 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 30 January

Taken. The only evening Caturthī reaches.

17:36 sunsetpradoṣa ends 19:27
17:1217:3618:0018:2418:4819:1219:3620:00

111 of 111 minutes covered

Evening of Monday 31 January

Caturthī is absent from pradoṣa. Not taken.

17:37 sunsetpradoṣa ends 19:28
17:1317:3718:0118:2518:4919:1319:3720:01

0 of 110 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 07:13 on Sun 30 Jan to 09:45 on Mon 31 Jan.

    2028-01-29T23:13:21Z → 2028-01-31T01:45:06Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:36–19:27 on the 30th, 17:37–19:28 on the 31st.

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

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 111 of 111 minutes on the 30th and 0 of 110 on the 31st.

    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 28318 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 2028: Sunday 30 January.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 2028 falls on Sunday 30 January. Caturthī runs from 07:13 on Sun 30 Jan to 09:45 on Mon 31 Jan and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2028/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 30 Jan
Ahargaṇa, classicalDisc centre, no refractionSun 30 Jan
compat-drikpanchangComparison profileSun 30 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 29thCoveredSunset 31stCoveredRuled
Los Angeles15:13 → 17:4517:20108 min17:220 min29 Jan
Chicago17:13 → 19:4517:01100 min17:040 min30 Jan
Jersey City18:13 → 20:4517:0948 min17:120 min30 Jan
Port of Spain19:13 → 21:4518:0934 min18:090 min30 Jan
London23:13 → 01:4516:430 min16:470 min30 Jan
Durban01:13 → 03:4518:560 min18:540 min30 Jan
Dubai03:13 → 05:4518:010 min18:020 min30 Jan
Delhi04:43 → 07:1517:570 min17:590 min30 Jan
Kolkata04:43 → 07:1517:220 min17:230 min30 Jan
Singapore07:13 → 09:4519:190 min19:200 min30 Jan
Sydney10:13 → 12:4520:030 min20:010 min30 Jan
Suva11:13 → 13:4518:470 min18:470 min30 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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