Ruling · Śītalāṣṭamī · 1937

Sunday 4 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 618 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 Saturday 3 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

Midday of Sunday 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

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 23:04 on Sat 3 Apr to 00:31 on Mon 5 Apr.

    1937-04-03T15:03:50Z → 1937-04-04T16:31:25Z

  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 0 of 48 minutes on the 3rd and 48 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 37070 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1937: Sunday 4 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1937 falls on Sunday 4 April. Aṣṭamī runs from 23:04 on Sat 3 Apr to 00:31 on Mon 5 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1937/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 4 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 4 Apr
compat-drikpanchangComparison profileSun 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles07:04 → 08:3111:3348 min11:320 min3 Apr
Chicago09:04 → 10:3111:3048 min11:300 min3 Apr
Jersey City10:04 → 11:3111:3648 min11:360 min3 Apr
Port of Spain11:04 → 12:3111:4648 min11:4546 min3 Apr
London15:04 → 16:3111:400 min11:4048 min4 Apr
Durban17:04 → 18:3111:350 min11:3548 min4 Apr
Dubai19:04 → 20:3111:580 min11:5848 min4 Apr
Delhi20:34 → 22:0112:010 min12:0048 min4 Apr
Kolkata20:34 → 22:0111:160 min11:1648 min4 Apr
Singapore22:24 → 23:5112:040 min12:0448 min4 Apr
Sydney01:04 → 02:3111:340 min11:3448 min4 Apr
Suva03:04 → 04:3111:460 min11:4548 min4 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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