Ruling · Śītalāṣṭamī · 1975

Thursday 3 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 165 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 Thursday 3 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

Midday of Friday 4 April

Aṣṭamī is absent from madhyāhna. Not taken.

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

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 07:47 on Thu 3 Apr to 09:13 on Fri 4 Apr.

    1975-04-02T23:46:38Z → 1975-04-04T01:12:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 3rd, 11:58–12:46 on the 4th.

    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 3rd and 0 of 48 on the 4th.

    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 9910 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1975: Thursday 3 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1975 falls on Thursday 3 April. Aṣṭamī runs from 07:47 on Thu 3 Apr to 09:13 on Fri 4 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1975/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 3 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 3 Apr
compat-drikpanchangComparison profileThu 3 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 2ndCoveredMadhyāhna 4thCoveredRuled
Los Angeles16:47 → 18:1312:330 min12:320 min3 Apr
Chicago18:47 → 20:1312:310 min12:300 min3 Apr
Jersey City19:47 → 21:1312:360 min12:360 min3 Apr
Port of Spain19:47 → 21:1311:460 min11:450 min3 Apr
London00:47 → 02:1312:410 min12:400 min3 Apr
Durban01:47 → 03:1311:350 min11:350 min3 Apr
Dubai03:47 → 05:1311:590 min11:580 min3 Apr
Delhi05:17 → 06:4312:010 min12:010 min3 Apr
Kolkata05:17 → 06:4311:170 min11:160 min3 Apr
Singapore07:17 → 08:4312:140 min12:140 min3 Apr
Sydney09:47 → 11:1311:350 min11:340 min3 Apr
Suva11:47 → 13:1311:460 min11:4548 min3 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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