Ruling · Śītalāṣṭamī · 2079

Saturday 25 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 38 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 25 March

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:23  12:11 madhyāhna ends
Aṣṭamī begins 10:39:21
10:3510:5911:2311:4712:1112:3512:59

48 of 48 minutes covered

Midday of Sunday 26 March

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
Aṣṭamī ends 12:48:28
10:3410:5811:2211:4612:1012:3412:58

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 10:39 on Sat 25 Mar to 12:48 on Sun 26 Mar.

    2079-03-25T02:39:22Z → 2079-03-26T04:48:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 25th, 11:22–12:10 on the 26th.

    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 25th and 48 of 48 on the 26th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 2289 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 2079: Saturday 25 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 2079 falls on Saturday 25 March. Aṣṭamī runs from 10:39 on Sat 25 Mar to 12:48 on Sun 26 Mar and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/daqing/festivals/2079/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 25 Mar
compat-drikpanchangComparison profileSat 25 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles19:39 → 21:4812:3548 min12:350 min25 Mar
Chicago21:39 → 23:4812:3348 min12:330 min25 Mar
Jersey City22:39 → 00:4812:3948 min12:380 min25 Mar
Port of Spain22:39 → 00:4811:4848 min11:480 min25 Mar
London02:39 → 05:4811:4348 min12:430 min25 Mar
Durban04:39 → 06:4811:3848 min11:370 min25 Mar
Dubai06:39 → 08:4812:0148 min12:010 min25 Mar
Delhi08:09 → 10:1812:0348 min12:030 min25 Mar
Kolkata08:09 → 10:1811:1948 min11:190 min25 Mar
Singapore10:39 → 12:4812:4748 min12:462 min25 Mar
Sydney13:39 → 15:4812:370 min12:3748 min26 Mar
Suva14:39 → 16:4811:480 min11:4848 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

About Ahargaṇa