Ruling · Śītalāṣṭamī · 1997

Tuesday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 122 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 Monday 31 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Tuesday 1 April

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

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 16:20 on Mon 31 Mar to 14:49 on Tue 1 Apr.

    1997-03-31T08:20:07Z → 1997-04-01T06:48:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 31st, 11:58–12:46 on the 1st.

    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 31st and 48 of 48 on the 1st.

    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 7343 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1997: Tuesday 1 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1997 falls on Tuesday 1 April. Aṣṭamī runs from 16:20 on Mon 31 Mar to 14:49 on Tue 1 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 1 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 1 Apr
compat-drikpanchangComparison profileTue 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles00:20 → 22:4911:3348 min11:330 min31 Mar
Chicago02:20 → 00:4911:3148 min11:310 min31 Mar
Jersey City03:20 → 01:4911:3748 min11:360 min31 Mar
Port of Spain04:20 → 02:4911:4648 min11:460 min31 Mar
London09:20 → 07:4912:4148 min12:410 min31 Mar
Durban10:20 → 08:4911:3648 min11:360 min31 Mar
Dubai12:20 → 10:4911:5927 min11:590 min31 Mar
Delhi13:50 → 12:1912:020 min12:0118 min1 Apr
Kolkata13:50 → 12:1911:170 min11:1748 min1 Apr
Singapore16:20 → 14:4912:450 min12:4548 min1 Apr
Sydney18:20 → 16:4911:350 min11:3548 min1 Apr
Suva20:20 → 18:4911:460 min11:4648 min1 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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