Ruling · Śivarātri (Masik Shivaratri) · 2026

Saturday 13 June

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 475 minutes.

Decide it for

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two nights

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

Night of Saturday 13 June

Taken. The only night Caturdaśī reaches.

niśītha begins 00:03  00:51 niśītha ends
23:1523:3900:0300:2700:5101:1501:39

48 of 48 minutes covered

Night of Sunday 14 June

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:03  00:51 niśītha ends
23:1523:3900:0300:2700:5101:1501:39

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 16:08 on Sat 13 Jun to 12:20 on Sun 14 Jun.

    2026-06-13T10:38:14Z → 2026-06-14T06:50:14Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:03–00:51 on the 13th, 00:03–00:51 on the 14th.

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

  3. 03

    Rule

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

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 28486 s

  5. 05

    Ruling

    Śivarātri, Ujjain, 2026: Saturday 13 June.

    confidence: determinate

Say it like this

In Ujjain, Śivarātri (Masik Shivaratri) 2026 falls on Saturday 13 June. Caturdaśī runs from 16:08 on Sat 13 Jun to 12:20 on Sun 14 Jun and covers all of niśītha that night.

ahargana.org/ujjain/festivals/2026/shivaratri?on=2026-06-13 · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Jun
Ahargaṇa, classicalDisc centre, no refractionSat 13 Jun
compat-drikpanchangComparison profileSat 13 Jun
No institution has a recorded ruling for Ujjain.

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

The rule, as data

/rules/shivaratri · ruleset 2026.3-draft

Month
Every lunation
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Niśītha
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 108

“The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108. The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīNiśītha 13thCoveredNiśītha 14thCoveredRuled
Los Angeles03:38 → 23:5000:290 min00:290 min12 Jun
Chicago05:38 → 01:5000:2748 min00:270 min13 Jun
Jersey City06:38 → 02:5000:3248 min00:330 min13 Jun
Port of Spain06:38 → 02:5023:4248 min23:430 min13 Jun
London11:38 → 07:5000:3748 min00:370 min13 Jun
Durban12:38 → 08:5023:3248 min23:320 min13 Jun
Dubai14:38 → 10:5023:5548 min23:550 min13 Jun
Delhi16:08 → 12:2023:5748 min23:570 min13 Jun
Kolkata16:08 → 12:2023:1348 min23:130 min13 Jun
Singapore18:38 → 14:5000:4148 min00:410 min13 Jun
Sydney20:38 → 16:5023:3148 min23:320 min13 Jun
Suva22:38 → 18:5023:4248 min23:430 min13 Jun
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shivaratri@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s