Ruling · Śītalāṣṭamī · 2000

Tuesday 28 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 413 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Monday 27 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
10:3410:5811:2211:4612:1012:3412:58

0 of 48 minutes covered

Midday of Tuesday 28 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

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 19:02 on Mon 27 Mar to 21:39 on Tue 28 Mar.

    2000-03-27T11:02:20Z → 2000-03-28T13:38:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 27th, 11:21–12:09 on the 28th.

    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 27th and 48 of 48 on the 28th.

    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 24752 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 2000: Tuesday 28 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 2000 falls on Tuesday 28 March. Aṣṭamī runs from 19:02 on Mon 27 Mar to 21:39 on Tue 28 Mar and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2000/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 28 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 28 Mar
compat-drikpanchangComparison profileTue 28 Mar
No institution has a recorded ruling for Daqing.

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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles03:02 → 05:3911:3448 min11:340 min27 Mar
Chicago05:02 → 07:3911:3248 min11:320 min27 Mar
Jersey City06:02 → 08:3911:3848 min11:380 min27 Mar
Port of Spain07:02 → 09:3911:4748 min11:470 min27 Mar
London12:02 → 14:3912:4248 min12:4248 min27 Mar
Durban13:02 → 15:3911:370 min11:3748 min28 Mar
Dubai15:02 → 17:3912:000 min12:0048 min28 Mar
Delhi16:32 → 19:0912:030 min12:0248 min28 Mar
Kolkata16:32 → 19:0911:180 min11:1848 min28 Mar
Singapore19:02 → 21:3912:460 min12:4648 min28 Mar
Sydney21:02 → 23:3911:360 min11:3648 min28 Mar
Suva23:02 → 01:3911:480 min11:4748 min28 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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