Ruling · Caitrī Pūrṇimā · 1958

Friday 4 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 Thursday 3 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

0 of 48 minutes covered

Midday of Friday 4 April

Taken. Pūrṇimā reaches neither midday; the rule takes the second day.

madhyāhna begins 11:58  12:46 madhyāhna ends
Pūrṇimā ends 11:44:45
11:1011:3411:5812:2212:4613:1013:34

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 15:33 on Thu 3 Apr to 11:45 on Fri 4 Apr.

    1958-04-03T07:32:32Z → 1958-04-04T03:44:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 3rd, 11:58–12:46 on the 4th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 0 of 48 on the 4th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: paraviddha → second-day · margin 777 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1958: Friday 4 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1958 falls on Friday 4 April. Pūrṇimā runs from 15:33 on Thu 3 Apr to 11:45 on Fri 4 Apr, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1958/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 4 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 4 Apr
compat-drikpanchangComparison profileFri 4 Apr
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/chaitri-purnima · ruleset 2026.3-draft

Month
Caitra, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles23:33 → 19:4511:3348 min11:320 min3 Apr
Chicago01:33 → 21:4511:3048 min11:300 min3 Apr
Jersey City02:33 → 22:4511:3648 min11:360 min3 Apr
Port of Spain03:33 → 23:4511:4648 min11:450 min3 Apr
London07:33 → 03:4511:4048 min11:400 min3 Apr
Durban09:33 → 05:4511:3548 min11:350 min3 Apr
Dubai11:33 → 07:4511:5848 min11:580 min3 Apr
Delhi13:03 → 09:1512:010 min12:000 min4 Apr
Kolkata13:03 → 09:1511:160 min11:160 min4 Apr
Singapore15:03 → 11:1512:140 min12:140 min4 Apr
Sydney17:33 → 13:4511:340 min11:3448 min4 Apr
Suva19:33 → 15:4511:460 min11:4548 min4 Apr
Profile · tradition
pac-rp@2026.1 · smarta
Rule
chaitri-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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