Ruling · Śītalāṣṭamī · 2017

Monday 20 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 12 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 Monday 20 March

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

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

48 of 48 minutes covered

Midday of Tuesday 21 March

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 12:02  12:50 madhyāhna ends
Aṣṭamī ends 13:02:00
11:1411:3812:0212:2612:5013:1413:38

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 10:49 on Mon 20 Mar to 13:02 on Tue 21 Mar.

    2017-03-20T02:49:20Z → 2017-03-21T05:02:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 20th, 12:02–12:50 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 741 s

  5. 05

    Ruling

    Śītalāṣṭamī, Baoding, 2017: Monday 20 March.

    confidence: determinate

Say it like this

In Baoding, Śītalāṣṭamī 2017 falls on Monday 20 March. Aṣṭamī runs from 10:49 on Mon 20 Mar to 13:02 on Tue 21 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/baoding/festivals/2017/shitalashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Mar
Ahargaṇa, classicalDisc centre, no refractionMon 20 Mar
compat-drikpanchangComparison profileMon 20 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles19:49 → 22:0212:3748 min12:360 min20 Mar
Chicago21:49 → 00:0212:3448 min12:340 min20 Mar
Jersey City22:49 → 01:0212:4048 min12:400 min20 Mar
Port of Spain22:49 → 01:0211:4948 min11:490 min20 Mar
London02:49 → 05:0211:4448 min11:440 min20 Mar
Durban04:49 → 07:0211:3948 min11:390 min20 Mar
Dubai06:49 → 09:0212:0248 min12:020 min20 Mar
Delhi08:19 → 10:3212:0548 min12:040 min20 Mar
Kolkata08:19 → 10:3211:2048 min11:200 min20 Mar
Singapore10:49 → 13:0212:4848 min12:4814 min20 Mar
Sydney13:49 → 16:0212:380 min12:3848 min21 Mar
Suva14:49 → 17:0211:500 min11:4948 min21 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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