Ruling · Śītalāṣṭamī · 2026

Wednesday 11 March

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 473 minutes.

Decide it for

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 11 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:13  13:01 madhyāhna ends
11:2511:4912:1312:3713:0113:2513:49

48 of 48 minutes covered

Midday of Thursday 12 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:13  13:01 madhyāhna ends
11:2511:4912:1312:3713:0113:2513:49

0 of 48 minutes covered

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 01:55 on Wed 11 Mar to 04:20 on Thu 12 Mar.

    2026-03-10T20:24:49Z → 2026-03-11T22:49:58Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 11th, 12:13–13:01 on the 12th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 28371 s

  5. 05

    Ruling

    Śītalāṣṭamī, Ujjain, 2026: Wednesday 11 March.

    confidence: determinate

Say it like this

In Ujjain, Śītalāṣṭamī 2026 falls on Wednesday 11 March. Aṣṭamī runs from 01:55 on Wed 11 Mar to 04:20 on Thu 12 Mar and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2026/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 11 Mar
Ahargaṇa, classicalDisc centre, no refractionWed 11 Mar
compat-drikpanchangComparison profileWed 11 Mar
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/shitalashtami · ruleset 2026.3-draft

Month
Phālguna, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“K 8 Sitalastami, (purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles13:25 → 15:5012:393 min12:3948 min10 Mar
Chicago15:25 → 17:5012:370 min12:3748 min11 Mar
Jersey City16:25 → 18:5012:430 min12:4348 min11 Mar
Port of Spain16:25 → 18:5011:520 min11:5248 min11 Mar
London20:25 → 22:5011:470 min11:4748 min11 Mar
Durban22:25 → 00:5011:420 min11:4248 min11 Mar
Dubai00:25 → 02:5012:050 min12:0548 min11 Mar
Delhi01:55 → 04:2012:080 min12:0748 min11 Mar
Kolkata01:55 → 04:2011:230 min11:2348 min11 Mar
Singapore04:25 → 06:5012:510 min12:5148 min11 Mar
Sydney07:25 → 09:5012:410 min12:4148 min11 Mar
Suva08:25 → 10:5011:530 min11:5248 min11 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shitalashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s