Ruling · Śītalāṣṭamī · 1983

Tuesday 5 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 363 minutes.

Decide it for

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 Tuesday 5 April

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

48 of 48 minutes covered

Midday of Wednesday 6 April

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

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 03:26 on Tue 5 Apr to 05:55 on Wed 6 Apr.

    1983-04-04T19:25:42Z → 1983-04-05T21:54:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 5th, 11:57–12:45 on the 6th.

    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 5th and 0 of 48 on the 6th.

    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 21751 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1983: Tuesday 5 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1983 falls on Tuesday 5 April. Aṣṭamī runs from 03:26 on Tue 5 Apr to 05:55 on Wed 6 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 5 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 5 Apr
compat-drikpanchangComparison profileTue 5 Apr
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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles11:26 → 13:5511:3248 min11:3248 min4 Apr
Chicago13:26 → 15:5511:300 min11:3048 min5 Apr
Jersey City14:26 → 16:5511:360 min11:3548 min5 Apr
Port of Spain15:26 → 17:5511:450 min11:4548 min5 Apr
London20:26 → 22:5512:400 min12:4048 min5 Apr
Durban21:26 → 23:5511:350 min11:3548 min5 Apr
Dubai23:26 → 01:5511:580 min11:5848 min5 Apr
Delhi00:56 → 03:2512:010 min12:0048 min5 Apr
Kolkata00:56 → 03:2511:160 min11:1648 min5 Apr
Singapore03:26 → 05:5512:440 min12:4448 min5 Apr
Sydney05:26 → 07:5511:340 min11:3448 min5 Apr
Suva07:26 → 09:5511:450 min11:4548 min5 Apr
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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