Ruling · Aghora Caturdaśī · 1985

Friday 13 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 602 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 12 September

Caturdaśī is absent from pradoṣa. Not taken.

18:32 sunsetpradoṣa ends 20:03
18:0818:3218:5619:2019:4420:0820:32

0 of 91 minutes covered

Evening of Friday 13 September

Taken. The only evening Caturdaśī reaches.

18:30 sunsetpradoṣa ends 20:02
18:0618:3018:5419:1819:4220:0620:30

92 of 92 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 08:22 on Fri 13 Sep to 06:04 on Sat 14 Sep.

    1985-09-13T00:21:31Z → 1985-09-13T22:03:59Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:32–20:03 on the 12th, 18:30–20:02 on the 13th.

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

  3. 03

    Rule

    Caturdaśī must be present during pradoṣa. It covers 0 of 91 minutes on the 12th and 92 of 92 on the 13th.

    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 36123 s

  5. 05

    Ruling

    Aghora Caturdaśī, Baoding, 1985: Friday 13 September.

    confidence: determinate

Say it like this

In Baoding, Aghora Caturdaśī 1985 falls on Friday 13 September. Caturdaśī runs from 08:22 on Fri 13 Sep to 06:04 on Sat 14 Sep and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1985/aghora-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 13 Sep
compat-drikpanchangComparison profileFri 13 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 13thCoveredSunset 14thCoveredRuled
Los Angeles17:22 → 15:0419:020 min19:000 min12 Sep
Chicago19:22 → 17:0419:030 min19:010 min12 Sep
Jersey City20:22 → 18:0419:080 min19:070 min12 Sep
Port of Spain20:22 → 18:0418:080 min18:070 min12 Sep
London01:22 → 23:0419:2090 min19:170 min13 Sep
Durban02:22 → 00:0417:4797 min17:470 min13 Sep
Dubai04:22 → 02:0418:2593 min18:240 min13 Sep
Delhi05:52 → 03:3418:2993 min18:270 min13 Sep
Kolkata05:52 → 03:3417:4293 min17:410 min13 Sep
Singapore08:22 → 06:0419:0495 min19:040 min13 Sep
Sydney10:22 → 08:0417:4598 min17:450 min13 Sep
Suva12:22 → 10:0418:0196 min18:010 min13 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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