Ruling · Śītalāṣṭamī · 2091

Monday 12 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 507 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 12 March

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:04  12:52 madhyāhna ends
11:1611:4012:0412:2812:5213:1613:40

48 of 48 minutes covered

Midday of Tuesday 13 March

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:04  12:52 madhyāhna ends
11:1611:4012:0412:2812:5213:1613:40

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 03:38 on Mon 12 Mar to 02:39 on Tue 13 Mar.

    2091-03-11T19:37:44Z → 2091-03-12T18:39:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 12th, 12:04–12:52 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 30403 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 2091: Monday 12 March.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 2091 falls on Monday 12 March. Aṣṭamī runs from 03:38 on Mon 12 Mar to 02:39 on Tue 13 Mar and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2091/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 12 Mar
Ahargaṇa, classicalDisc centre, no refractionMon 12 Mar
compat-drikpanchangComparison profileMon 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles12:38 → 11:3912:3948 min12:390 min11 Mar
Chicago14:38 → 13:3912:370 min12:3748 min12 Mar
Jersey City15:38 → 14:3912:430 min12:4248 min12 Mar
Port of Spain15:38 → 14:3911:520 min11:5248 min12 Mar
London19:38 → 18:3911:470 min11:4748 min12 Mar
Durban21:38 → 20:3911:420 min11:4248 min12 Mar
Dubai23:38 → 22:3912:050 min12:0548 min12 Mar
Delhi01:08 → 00:0912:080 min12:0748 min12 Mar
Kolkata01:08 → 00:0911:230 min11:2348 min12 Mar
Singapore03:38 → 02:3912:510 min12:5148 min12 Mar
Sydney06:38 → 05:3912:410 min12:4148 min12 Mar
Suva07:38 → 06:3911:520 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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