Ruling · Rāsayātrā · 1997

Thursday 13 November

Boundaryin Chongqing, under the Rashtriya Panchang method. A threshold is only 1 min 22 s away. Say “contested”.

Decide it for

29°34′ N 106°33′ E · Asia/Shanghai · GeoNames 1814906

The two nights

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

Night of Thursday 13 November

Taken. The only night Pūrṇimā reaches.

niśītha begins 00:14  01:02 niśītha ends
Pūrṇimā begins 01:00:54
23:2623:5000:1400:3801:0201:2601:50

1 of 48 minutes covered, the last 1

Night of Friday 14 November

Pūrṇimā is absent from niśītha. Not taken.

niśītha begins 00:14  01:02 niśītha ends
23:2623:5000:1400:3801:0201:2601:50

0 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 01:01 on Fri 14 Nov to 22:12 on Fri 14 Nov.

    1997-11-13T17:00:55Z → 1997-11-14T14:11:37Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:14–01:02 on the 13th, 00:14–01:02 on the 14th.

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

  3. 03

    Rule

    Pūrṇimā must be present during niśītha. It covers 1 of 48 minutes on the 13th and 0 of 48 on the 14th.

    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 82 s < 300 s

  5. 05

    Ruling

    Rāsayātrā, Chongqing, 1997: Thursday 13 November.

    confidence: boundary (margin)

Say it like this

In Chongqing, Rāsayātrā 1997 falls on Thursday 13 November. Pūrṇimā runs from 01:01 on Fri 14 Nov to 22:12 on Fri 14 Nov and covers 1 of 48 minutes of niśītha that night. It is 1 min 22 s from a threshold: treat the date as contested.

ahargana.org/chongqing/festivals/1997/rasayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 13 Nov
compat-drikpanchangComparison profileThu 13 Nov
No institution has a recorded ruling for Chongqing.

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 13thCoveredNiśītha 14thCoveredRuled
Los Angeles09:01 → 06:1223:1448 min23:140 min13 Nov
Chicago11:01 → 08:1223:1148 min23:110 min13 Nov
Jersey City12:01 → 09:1223:1748 min23:170 min13 Nov
Port of Spain13:01 → 10:1223:2748 min23:270 min13 Nov
London17:01 → 14:1223:2148 min23:220 min13 Nov
Durban19:01 → 16:1223:1648 min23:160 min13 Nov
Dubai21:01 → 18:1223:3948 min23:390 min13 Nov
Delhi22:31 → 19:4223:4248 min23:420 min13 Nov
Kolkata22:31 → 19:4222:5748 min22:570 min13 Nov
Singapore01:01 → 22:1200:2512 min00:250 min13 Nov
Sydney04:01 → 01:1200:150 min00:1548 min14 Nov
Suva05:01 → 02:1223:270 min23:2748 min14 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

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