Ruling · Śītalāṣṭamī · 1913

Saturday 29 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 101 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 29 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 30 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

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 08:25 on Sat 29 Mar to 09:40 on Sun 30 Mar.

    1913-03-29T00:25:15Z → 1913-03-30T01:39:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 29th, 11:21–12:09 on the 30th.

    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 29th and 0 of 48 on the 30th.

    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 6083 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 1913: Saturday 29 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 1913 falls on Saturday 29 March. Aṣṭamī runs from 08:25 on Sat 29 Mar to 09:40 on Sun 30 Mar and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1913/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 29 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 29 Mar
compat-drikpanchangComparison profileSat 29 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles16:25 → 17:4011:3448 min11:340 min29 Mar
Chicago18:25 → 19:4011:3248 min11:320 min29 Mar
Jersey City19:25 → 20:4011:3848 min11:370 min29 Mar
Port of Spain20:25 → 21:4011:4748 min11:470 min29 Mar
London00:25 → 01:4011:4248 min11:420 min29 Mar
Durban02:25 → 03:4011:3748 min11:360 min29 Mar
Dubai04:06 → 05:2111:4148 min11:410 min29 Mar
Delhi05:55 → 07:1012:0248 min12:020 min29 Mar
Kolkata05:55 → 07:1011:1848 min11:170 min29 Mar
Singapore07:25 → 08:4011:4648 min11:450 min29 Mar
Sydney10:25 → 11:4011:3648 min11:364 min29 Mar
Suva12:20 → 13:3511:4210 min11:4248 min29 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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