Ruling · Śītalāṣṭamī · 2090

Thursday 23 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 343 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Wednesday 22 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

0 of 48 minutes covered

Midday of Thursday 23 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

48 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 18:32 on Wed 22 Mar to 19:32 on Thu 23 Mar.

    2090-03-22T10:32:14Z → 2090-03-23T11:31:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 22nd, 12:01–12:49 on the 23rd.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.

    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 20562 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 2090: Thursday 23 March.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 2090 falls on Thursday 23 March. Aṣṭamī runs from 18:32 on Wed 22 Mar to 19:32 on Thu 23 Mar and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2090/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 23 Mar
Ahargaṇa, classicalDisc centre, no refractionThu 23 Mar
compat-drikpanchangComparison profileThu 23 Mar
No institution has a recorded ruling for Baoding.

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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles03:32 → 04:3212:3648 min12:360 min22 Mar
Chicago05:32 → 06:3212:3448 min12:340 min22 Mar
Jersey City06:32 → 07:3212:4048 min12:390 min22 Mar
Port of Spain06:32 → 07:3211:4948 min11:490 min22 Mar
London10:32 → 11:3211:4448 min11:440 min22 Mar
Durban12:32 → 13:3211:390 min11:3848 min23 Mar
Dubai14:32 → 15:3212:020 min12:0248 min23 Mar
Delhi16:02 → 17:0212:040 min12:0448 min23 Mar
Kolkata16:02 → 17:0211:200 min11:1948 min23 Mar
Singapore18:32 → 19:3212:480 min12:4748 min23 Mar
Sydney21:32 → 22:3212:380 min12:3848 min23 Mar
Suva22:32 → 23:3211:490 min11:4948 min23 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

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