Ruling · Śītalāṣṭamī · 2072

Friday 11 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 16 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 Friday 11 March

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

madhyāhna begins 11:26  12:14 madhyāhna ends
Aṣṭamī begins 10:51:14
10:3811:0211:2611:5012:1412:3813:02

48 of 48 minutes covered

Midday of Saturday 12 March

Qualifies with 32 of 48 minutes. Not taken.

madhyāhna begins 11:26  12:14 madhyāhna ends
Aṣṭamī ends 11:58:22
10:3811:0211:2611:5012:1412:3813:02

32 of 48 minutes covered, the first 32

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 10:51 on Fri 11 Mar to 11:58 on Sat 12 Mar.

    2072-03-11T02:51:15Z → 2072-03-12T03:58:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 11th, 11:26–12:14 on the 12th.

    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 11th and 32 of 48 on the 12th.

    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 943 s

  5. 05

    Ruling

    Śītalāṣṭamī, Daqing, 2072: Friday 11 March.

    confidence: determinate

Say it like this

In Daqing, Śītalāṣṭamī 2072 falls on Friday 11 March. Aṣṭamī runs from 10:51 on Fri 11 Mar to 11:58 on Sat 12 Mar and covers all of madhyāhna that midday. It also reaches the next midday for 32 minutes; by the rule the first midday is taken.

ahargana.org/daqing/festivals/2072/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Mar
Ahargaṇa, classicalDisc centre, no refractionFri 11 Mar
compat-drikpanchangComparison profileFri 11 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles18:51 → 19:5811:3948 min11:390 min11 Mar
Chicago20:51 → 21:5811:3748 min11:360 min11 Mar
Jersey City21:51 → 22:5811:4248 min11:420 min11 Mar
Port of Spain22:51 → 23:5811:5248 min11:520 min11 Mar
London02:51 → 03:5811:4748 min11:470 min11 Mar
Durban04:51 → 05:5811:4248 min11:410 min11 Mar
Dubai06:51 → 07:5812:0548 min12:050 min11 Mar
Delhi08:21 → 09:2812:0748 min12:070 min11 Mar
Kolkata08:21 → 09:2811:2348 min11:220 min11 Mar
Singapore10:51 → 11:5812:5148 min12:500 min11 Mar
Sydney13:51 → 14:5812:410 min12:4148 min12 Mar
Suva14:51 → 15:5811:520 min11:5248 min12 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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