Ruling · Śītalāṣṭamī · 2081

Tuesday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 609 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 22:56 on Mon 31 Mar to 00:27 on Wed 2 Apr.

    2081-03-31T14:55:33Z → 2081-04-01T16:27:28Z

  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 36529 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 2081: Tuesday 1 April.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 2081 falls on Tuesday 1 April. Aṣṭamī runs from 22:56 on Mon 31 Mar to 00:27 on Wed 2 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2081/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 Angeles07:56 → 09:2712:3348 min12:330 min31 Mar
Chicago09:56 → 11:2712:3148 min12:310 min31 Mar
Jersey City10:56 → 12:2712:3748 min12:360 min31 Mar
Port of Spain10:56 → 12:2711:4648 min11:4641 min31 Mar
London15:56 → 17:2712:410 min12:4148 min1 Apr
Durban16:56 → 18:2711:360 min11:3648 min1 Apr
Dubai18:56 → 20:2711:590 min11:5948 min1 Apr
Delhi20:26 → 21:5712:020 min12:0148 min1 Apr
Kolkata20:26 → 21:5711:170 min11:1748 min1 Apr
Singapore22:56 → 00:2712:450 min12:4548 min1 Apr
Sydney01:56 → 03:2712:350 min12:3548 min1 Apr
Suva02:56 → 04:2711:460 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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