Ruling · Aghora Caturdaśī · 1980

Sunday 7 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 155 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 Sunday 7 September

Taken. The only evening Caturdaśī reaches.

18:39 sunsetpradoṣa ends 20:09
18:1518:3919:0319:2719:5120:1520:39

90 of 90 minutes covered

Evening of Monday 8 September

Caturdaśī is absent from pradoṣa. Not taken.

18:38 sunsetpradoṣa ends 20:08
18:1418:3819:0219:2619:5020:1420:38

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 14:25 on Sun 7 Sep to 16:03 on Mon 8 Sep.

    1980-09-07T06:25:24Z → 1980-09-08T08:02:46Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:39–20:09 on the 7th, 18:38–20:08 on the 8th.

    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 7th and 0 of 90 on the 8th.

    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 9300 s

  5. 05

    Ruling

    Aghora Caturdaśī, Baoding, 1980: Sunday 7 September.

    confidence: determinate

Say it like this

In Baoding, Aghora Caturdaśī 1980 falls on Sunday 7 September. Caturdaśī runs from 14:25 on Sun 7 Sep to 16:03 on Mon 8 Sep and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1980/aghora-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 7 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 7 Sep
compat-drikpanchangComparison profileSun 7 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 7thCoveredSunset 8thCoveredRuled
Los Angeles23:25 → 01:0319:1091 min19:090 min7 Sep
Chicago01:25 → 03:0319:1389 min19:110 min7 Sep
Jersey City02:25 → 04:0319:1890 min19:160 min7 Sep
Port of Spain02:25 → 04:0318:1194 min18:110 min7 Sep
London07:25 → 09:0319:3387 min19:310 min7 Sep
Durban08:25 → 10:0317:4499 min17:440 min7 Sep
Dubai10:25 → 12:0318:3192 min18:300 min7 Sep
Delhi11:55 → 13:3318:3592 min18:340 min7 Sep
Kolkata11:55 → 13:3317:4892 min17:470 min7 Sep
Singapore13:55 → 15:3318:3695 min18:360 min7 Sep
Sydney16:25 → 18:0317:4199 min17:4121 min7 Sep
Suva18:25 → 20:0318:0071 min18:0097 min8 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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