Ruling · Rāsayātrā · 2021

Thursday 18 November

Determinatein Durban, under the Rashtriya Panchang method. Clear of every threshold by 506 minutes.

Decide it for

29°51′ S 31°02′ E · Africa/Johannesburg · GeoNames 1007311

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Wednesday 17 November

Pūrṇimā is absent from niśītha. Not taken.

niśītha begins 23:17  00:05 niśītha ends
22:2922:5323:1723:4100:0500:2900:53

0 of 48 minutes covered

Night of Thursday 18 November

Taken. The only night Pūrṇimā reaches.

niśītha begins 23:17  00:05 niśītha ends
22:2922:5323:1723:4100:0500:2900:53

48 of 48 minutes covered

Pūrṇimā presentNiśītha, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 08:31 on Thu 18 Nov to 10:57 on Fri 19 Nov.

    2021-11-18T06:30:44Z → 2021-11-19T08:57:28Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:17–00:05 on the 17th, 23:17–00:05 on the 18th.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: paraviddha → only-day · margin 30355 s

  5. 05

    Ruling

    Rāsayātrā, Durban, 2021: Thursday 18 November.

    confidence: determinate

Say it like this

In Durban, Rāsayātrā 2021 falls on Thursday 18 November. Pūrṇimā runs from 08:31 on Thu 18 Nov to 10:57 on Fri 19 Nov and covers all of niśītha that night.

ahargana.org/durban/festivals/2021/rasayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 18 Nov
compat-drikpanchangComparison profileThu 18 Nov
No institution has a recorded ruling for Durban.

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

The rule, as data

/rules/rasayatra · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Niśītha
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāNiśītha 18thCoveredNiśītha 19thCoveredRuled
Los Angeles22:31 → 00:5723:1548 min23:150 min18 Nov
Chicago00:31 → 02:5723:1248 min23:120 min18 Nov
Jersey City01:31 → 03:5723:1848 min23:180 min18 Nov
Port of Spain02:31 → 04:5723:2748 min23:280 min18 Nov
London06:31 → 08:5723:2248 min23:220 min18 Nov
Durban08:31 → 10:5723:1748 min23:170 min18 Nov
Dubai10:31 → 12:5723:4048 min23:400 min18 Nov
Delhi12:01 → 14:2723:4248 min23:430 min18 Nov
Kolkata12:01 → 14:2722:5848 min22:580 min18 Nov
Singapore14:31 → 16:5700:2648 min00:260 min18 Nov
Sydney17:31 → 19:5700:1648 min00:160 min18 Nov
Suva18:31 → 20:5723:2748 min23:280 min18 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rasayatra@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa