Ruling · Śītalāṣṭamī · 2071

Tuesday 24 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 11 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 23 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:23  12:11 madhyāhna ends
Aṣṭamī begins 12:21:49
10:3510:5911:2311:4712:1112:3512:59

0 of 48 minutes covered

Midday of Tuesday 24 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:23  12:11 madhyāhna ends
10:3510:5911:2311:4712:1112:3512:59

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 12:22 on Mon 23 Mar to 14:47 on Tue 24 Mar.

    2071-03-23T04:21:49Z → 2071-03-24T06:46:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 23rd, 11:23–12:11 on the 24th.

    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 23rd and 48 of 48 on the 24th.

    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 639 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 2071: Tuesday 24 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 2071 falls on Tuesday 24 March. Aṣṭamī runs from 12:22 on Mon 23 Mar to 14:47 on Tue 24 Mar and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2071/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 24 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 24 Mar
compat-drikpanchangComparison profileMon 23 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles21:22 → 23:4712:3648 min12:350 min23 Mar
Chicago23:22 → 01:4712:3448 min12:330 min23 Mar
Jersey City00:22 → 02:4712:3948 min12:390 min23 Mar
Port of Spain00:22 → 02:4711:4948 min11:480 min23 Mar
London04:22 → 06:4711:4448 min11:430 min23 Mar
Durban06:22 → 08:4711:3848 min11:380 min23 Mar
Dubai08:22 → 10:4712:0248 min12:010 min23 Mar
Delhi09:52 → 12:1712:0448 min12:0413 min23 Mar
Kolkata09:52 → 12:1711:1948 min11:1948 min23 Mar
Singapore12:22 → 14:4712:4748 min12:4748 min23 Mar
Sydney15:22 → 17:4712:380 min12:3748 min24 Mar
Suva16:22 → 18:4711:490 min11:4948 min24 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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