Ruling · Aghora Caturdaśī · 2025

Thursday 21 August

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 369 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Thursday 21 August

Taken. The only evening Caturdaśī reaches.

18:54 sunsetpradoṣa ends 20:24
18:3018:5419:1819:4220:0620:3020:54

90 of 90 minutes covered

Evening of Friday 22 August

Caturdaśī is absent from pradoṣa. Not taken.

18:53 sunsetpradoṣa ends 20:23
18:2918:5319:1719:4120:0520:2920:53

0 of 90 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 12:45 on Thu 21 Aug to 11:56 on Fri 22 Aug.

    2025-08-21T07:15:24Z → 2025-08-22T06:26:29Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:54–20:24 on the 21st, 18:53–20:23 on the 22nd.

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

  3. 03

    Rule

    Caturdaśī must be present during pradoṣa. It covers 90 of 90 minutes on the 21st and 0 of 90 on the 22nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 22128 s

  5. 05

    Ruling

    Aghora Caturdaśī, Ujjain, 2025: Thursday 21 August.

    confidence: determinate

Say it like this

In Ujjain, Aghora Caturdaśī 2025 falls on Thursday 21 August. Caturdaśī runs from 12:45 on Thu 21 Aug to 11:56 on Fri 22 Aug and covers all of pradoṣa that evening.

ahargana.org/ujjain/festivals/2025/aghora-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 21 Aug
compat-drikpanchangComparison profileThu 21 Aug
No institution has a recorded ruling for Ujjain.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/aghora-chaturdashi · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“K 14 Aghora caturdasi (pradosa vyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīSunset 21stCoveredSunset 22ndCoveredRuled
Los Angeles00:15 → 23:2619:3286 min19:310 min21 Aug
Chicago02:15 → 01:2619:4183 min19:390 min21 Aug
Jersey City03:15 → 02:2619:4584 min19:430 min21 Aug
Port of Spain03:15 → 02:2618:2193 min18:210 min21 Aug
London08:15 → 07:2620:1078 min20:080 min21 Aug
Durban09:15 → 08:2617:35102 min17:350 min21 Aug
Dubai11:15 → 10:2618:4889 min18:470 min21 Aug
Delhi12:45 → 11:5618:5488 min18:530 min21 Aug
Kolkata12:45 → 11:5618:0390 min18:020 min21 Aug
Singapore15:15 → 14:2619:1295 min19:120 min21 Aug
Sydney17:15 → 16:2617:29104 min17:300 min21 Aug
Suva19:15 → 18:2617:5721 min17:5729 min22 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
aghora-chaturdashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s