Ruling · Śītalāṣṭamī · 1918

Thursday 4 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 131 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 4 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 5 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 09:46 on Thu 4 Apr to 09:08 on Fri 5 Apr.

    1918-04-04T01:46:27Z → 1918-04-05T01:08:11Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 4th, 11:57–12:45 on the 5th.

    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 4th and 0 of 48 on the 5th.

    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 7880 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1918: Thursday 4 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1918 falls on Thursday 4 April. Aṣṭamī runs from 09:46 on Thu 4 Apr to 09:08 on Fri 5 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1918/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 4 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 4 Apr
compat-drikpanchangComparison profileThu 4 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 Angeles18:46 → 18:0812:3248 min12:320 min4 Apr
Chicago20:46 → 20:0812:3048 min12:300 min4 Apr
Jersey City21:46 → 21:0812:3648 min12:360 min4 Apr
Port of Spain21:46 → 21:0811:4548 min11:450 min4 Apr
London02:46 → 02:0812:4048 min12:400 min4 Apr
Durban03:46 → 03:0811:3548 min11:350 min4 Apr
Dubai05:27 → 04:4911:3948 min11:390 min4 Apr
Delhi07:16 → 06:3812:0148 min12:000 min4 Apr
Kolkata07:16 → 06:3811:1648 min11:160 min4 Apr
Singapore08:46 → 08:0811:4448 min11:440 min4 Apr
Sydney11:46 → 11:0811:3436 min11:340 min4 Apr
Suva13:46 → 13:0811:460 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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