Ruling · Aghora Caturdaśī · 1931

Thursday 10 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 41 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 Thursday 10 September

Taken. The only evening Caturdaśī reaches.

18:36 sunsetpradoṣa ends 20:07
Caturdaśī begins 19:26:15
18:1218:3619:0019:2419:4820:1220:36

41 of 90 minutes covered, the last 41

Evening of Friday 11 September

Caturdaśī is absent from pradoṣa. Not taken.

18:35 sunsetpradoṣa ends 20:06
18:1118:3518:5919:2319:4720:1120:35

0 of 91 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 19:26 on Thu 10 Sep to 16:04 on Fri 11 Sep.

    1931-09-10T11:26:15Z → 1931-09-11T08:03:45Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:36–20:07 on the 10th, 18:35–20:06 on the 11th.

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

  3. 03

    Rule

    Caturdaśī must be present during pradoṣa. It covers 41 of 90 minutes on the 10th and 0 of 91 on the 11th.

    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 2435 s

  5. 05

    Ruling

    Aghora Caturdaśī, Baoding, 1931: Thursday 10 September.

    confidence: determinate

Say it like this

In Baoding, Aghora Caturdaśī 1931 falls on Thursday 10 September. Caturdaśī runs from 19:26 on Thu 10 Sep to 16:04 on Fri 11 Sep and covers 41 of 90 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1931/aghora-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 10 Sep
compat-drikpanchangComparison profileThu 10 Sep
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/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 10thCoveredSunset 11thCoveredRuled
Los Angeles03:26 → 00:0418:0791 min18:060 min10 Sep
Chicago06:26 → 03:0419:1090 min19:080 min10 Sep
Jersey City07:26 → 04:0419:1590 min19:130 min10 Sep
Port of Spain07:26 → 04:0418:1094 min18:100 min10 Sep
London12:26 → 09:0419:2988 min19:260 min10 Sep
Durban13:26 → 10:0417:4598 min17:450 min10 Sep
Dubai15:26 → 12:0418:2993 min18:280 min10 Sep
Delhi16:56 → 13:3418:3392 min18:320 min10 Sep
Kolkata16:56 → 13:3417:4693 min17:450 min10 Sep
Singapore18:26 → 15:0418:0574 min18:050 min10 Sep
Sydney21:26 → 18:0417:420 min17:4321 min11 Sep
Suva23:26 → 20:0418:000 min18:0097 min11 Sep
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

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