Ruling · Rāsayātrā · 1981

Wednesday 11 November

Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 351 minutes.

Decide it for

DatongDelhiKolkataSingaporeSydneyJersey City

40°06′ N 113°17′ E · Asia/Shanghai · GeoNames 2037799

The two nights

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

Night of Tuesday 10 November

Pūrṇimā is absent from niśītha. Not taken.

niśītha begins 23:47  00:35 niśītha ends
22:5923:2323:4700:1100:3500:5901:23

0 of 48 minutes covered

Night of Wednesday 11 November

Taken. The only night Pūrṇimā reaches.

niśītha begins 23:47  00:35 niśītha ends
22:5923:2323:4700:1100:3500:5901:23

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 10:13 on Wed 11 Nov to 06:26 on Thu 12 Nov.

    1981-11-11T02:13:07Z → 1981-11-11T22:26:29Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:47–00:35 on the 10th, 23:47–00:35 on the 11th.

    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 10th and 48 of 48 on the 11th.

    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 21077 s

  5. 05

    Ruling

    Rāsayātrā, Datong, 1981: Wednesday 11 November.

    confidence: determinate

Say it like this

In Datong, Rāsayātrā 1981 falls on Wednesday 11 November. Pūrṇimā runs from 10:13 on Wed 11 Nov to 06:26 on Thu 12 Nov and covers all of niśītha that night.

ahargana.org/datong/festivals/1981/rasayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 11 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 11 Nov
compat-drikpanchangComparison profileWed 11 Nov
No institution has a recorded ruling for Datong.

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 11thCoveredNiśītha 12thCoveredRuled
Los Angeles18:13 → 14:2623:130 min23:130 min10 Nov
Chicago20:13 → 16:2623:110 min23:110 min10 Nov
Jersey City21:13 → 17:2623:170 min23:170 min10 Nov
Port of Spain22:13 → 18:2623:260 min23:260 min10 Nov
London02:13 → 22:2623:210 min23:210 min11 Nov
Durban04:13 → 00:2623:1648 min23:160 min11 Nov
Dubai06:13 → 02:2623:3948 min23:390 min11 Nov
Delhi07:43 → 03:5623:4148 min23:410 min11 Nov
Kolkata07:43 → 03:5622:5748 min22:570 min11 Nov
Singapore09:43 → 05:5623:5548 min23:550 min11 Nov
Sydney13:13 → 09:2600:1548 min00:150 min11 Nov
Suva14:13 → 10:2623:2648 min23:260 min11 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