Ruling · Ananta Caturdaśī · 2021

Monday 20 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 6 min 56 s.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two mornings

One ghaṭī is 24 minutes. The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas.

Morning of Sunday 19 September

Caturdaśī is absent from the first three muhūrtas after sunrise. Not taken.

05:23 sunrisethree muhūrtas on 07:51
04:5905:2305:4706:1106:3506:5907:2307:4708:11

0 of 148 minutes covered

Morning of Monday 20 September

Taken. The only morning Caturdaśī reaches.

05:24 sunrisethree muhūrtas on 07:52
Caturdaśī ends 07:58:40
05:0005:2405:4806:1206:3607:0007:2407:4808:12

148 of 148 minutes covered

Caturdaśī presentThe first three muhūrtas after sunrise, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 08:30 on Sun 19 Sep to 07:59 on Mon 20 Sep.

    2021-09-19T00:30:15Z → 2021-09-19T23:58:41Z

  2. 02

    Kāla

    The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:23–07:51 on the 19th, 05:24–07:52 on the 20th.

    udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 0 of 148 minutes on the 19th and 148 of 148 on the 20th.

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

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 416 s

  5. 05

    Ruling

    Ananta Caturdaśī, Daqing, 2021: Monday 20 September.

    confidence: determinate

Say it like this

In Daqing, Ananta Caturdaśī 2021 falls on Monday 20 September. Caturdaśī runs from 08:30 on Sun 19 Sep to 07:59 on Mon 20 Sep and covers all of the first three muhūrtas after sunrise that morning.

ahargana.org/daqing/festivals/2021/ananta-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 20 Sep
compat-drikpanchangComparison profileMon 20 Sep
No institution has a recorded ruling for Daqing.

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

The rule, as data

/rules/ananta-chaturdashi · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Caturdaśī
Kāla
The first three muhūrtas after sunrise
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103. In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīSunrise 19thCoveredSunrise 20thCoveredRuled
Los Angeles17:30 → 16:5906:39147 min06:400 min19 Sep
Chicago19:30 → 18:5906:35147 min06:370 min19 Sep
Jersey City20:30 → 19:5906:41147 min06:420 min19 Sep
Port of Spain20:30 → 19:5905:56146 min05:560 min19 Sep
London01:30 → 00:5906:42149 min06:440 min19 Sep
Durban02:30 → 01:5905:49144 min05:480 min19 Sep
Dubai04:30 → 03:5906:06146 min06:070 min19 Sep
Delhi06:00 → 05:2906:08147 min06:090 min19 Sep
Kolkata06:00 → 05:2905:25111 min05:254 min19 Sep
Singapore08:30 → 07:5906:5550 min06:5564 min19 Sep
Sydney10:30 → 09:5905:490 min05:48144 min20 Sep
Suva12:30 → 11:5905:590 min05:58145 min20 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ananta-chaturdashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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