Ruling · Śītalāṣṭamī · 2011

Saturday 26 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 182 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Saturday 26 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:22  12:10 madhyāhna ends
10:3410:5811:2211:4612:1012:3412:58

48 of 48 minutes covered

Midday of Sunday 27 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
10:3410:5811:2211:4612:1012:3412:58

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 08:06 on Sat 26 Mar to 08:20 on Sun 27 Mar.

    2011-03-26T00:05:54Z → 2011-03-27T00:20:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 26th, 11:22–12:10 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 48 of 48 minutes on the 26th and 0 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 10898 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 2011: Saturday 26 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 2011 falls on Saturday 26 March. Aṣṭamī runs from 08:06 on Sat 26 Mar to 08:20 on Sun 27 Mar and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2011/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 26 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 26 Mar
compat-drikpanchangComparison profileSat 26 Mar
No institution has a recorded ruling for Daqing.

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 Angeles17:06 → 17:2012:3548 min12:350 min26 Mar
Chicago19:06 → 19:2012:3348 min12:320 min26 Mar
Jersey City20:06 → 20:2012:3848 min12:380 min26 Mar
Port of Spain20:06 → 20:2011:4848 min11:480 min26 Mar
London00:06 → 00:2011:4348 min12:420 min26 Mar
Durban02:06 → 02:2011:3748 min11:370 min26 Mar
Dubai04:06 → 04:2012:0148 min12:000 min26 Mar
Delhi05:36 → 05:5012:0348 min12:030 min26 Mar
Kolkata05:36 → 05:5011:1948 min11:180 min26 Mar
Singapore08:06 → 08:2012:4648 min12:460 min26 Mar
Sydney11:06 → 11:2012:3748 min12:370 min26 Mar
Suva12:06 → 12:2011:4830 min11:4833 min26 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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