Ruling · Śītalāṣṭamī · 1920

Friday 12 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 14 minutes.

Decide it for

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 Friday 12 March

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

madhyāhna begins 12:04  12:52 madhyāhna ends
Aṣṭamī begins 12:38:15
11:1611:4012:0412:2812:5213:1613:40

14 of 48 minutes covered, the last 14

Midday of Saturday 13 March

Qualifies with 48 of 48 minutes. Not taken.

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

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 12:38 on Fri 12 Mar to 15:14 on Sat 13 Mar.

    1920-03-12T04:38:15Z → 1920-03-13T07:13:43Z

  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 14 of 48 minutes on the 12th and 48 of 48 on the 13th.

    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 852 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 1920: Friday 12 March.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 1920 falls on Friday 12 March. Aṣṭamī runs from 12:38 on Fri 12 Mar to 15:14 on Sat 13 Mar and covers 14 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1920/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Mar
Ahargaṇa, classicalDisc centre, no refractionFri 12 Mar
compat-drikpanchangComparison profileFri 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles20:38 → 23:1411:3948 min11:390 min12 Mar
Chicago22:38 → 01:1411:3748 min11:370 min12 Mar
Jersey City23:38 → 02:1411:4248 min11:420 min12 Mar
Port of Spain00:38 → 03:1411:5248 min11:520 min12 Mar
London04:38 → 07:1411:4748 min11:470 min12 Mar
Durban06:38 → 09:1411:4248 min11:410 min12 Mar
Dubai08:38 → 11:1412:0548 min12:050 min12 Mar
Delhi10:08 → 12:4412:0748 min12:0737 min12 Mar
Kolkata10:08 → 12:4411:2348 min11:2248 min12 Mar
Singapore11:38 → 14:1411:5148 min11:5048 min12 Mar
Sydney14:38 → 17:1411:410 min11:4148 min13 Mar
Suva16:38 → 19:1411:520 min11:5248 min13 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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