Ruling · Śītalāṣṭamī · 1973

Tuesday 27 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 342 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 26 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Tuesday 27 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

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 18:31 on Mon 26 Mar to 20:57 on Tue 27 Mar.

    1973-03-26T10:30:35Z → 1973-03-27T12:57:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 26th, 12:00–12:48 on the 27th.

    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 26th and 48 of 48 on the 27th.

    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 20537 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1973: Tuesday 27 March.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1973 falls on Tuesday 27 March. Aṣṭamī runs from 18:31 on Mon 26 Mar to 20:57 on Tue 27 Mar and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 27 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 27 Mar
compat-drikpanchangComparison profileTue 27 Mar
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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles02:31 → 04:5711:3548 min11:350 min26 Mar
Chicago04:31 → 06:5711:3348 min11:320 min26 Mar
Jersey City05:31 → 07:5711:3848 min11:380 min26 Mar
Port of Spain06:31 → 08:5711:4848 min11:480 min26 Mar
London11:31 → 13:5712:4348 min12:4248 min26 Mar
Durban12:31 → 14:5711:370 min11:3748 min27 Mar
Dubai14:31 → 16:5712:010 min12:0048 min27 Mar
Delhi16:01 → 18:2712:030 min12:0348 min27 Mar
Kolkata16:01 → 18:2711:190 min11:1848 min27 Mar
Singapore18:01 → 20:2712:160 min12:1648 min27 Mar
Sydney20:31 → 22:5711:370 min11:3648 min27 Mar
Suva22:31 → 00:5711:480 min11:4848 min27 Mar
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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