Ruling · Buddha Pūrṇimā · 1970

Thursday 21 May

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 Wednesday 20 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
Pūrṇimā begins 13:01:42
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Thursday 21 May

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

madhyāhna begins 11:51  12:39 madhyāhna ends
Pūrṇimā ends 11:37:34
11:0311:2711:5112:1512:3913:0313:27

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 13:02 on Wed 20 May to 11:38 on Thu 21 May.

    1970-05-20T05:01:42Z → 1970-05-21T03:37:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 20th, 11:51–12:39 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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: unstated → second-day · margin 796 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1970: Thursday 21 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā 1970 falls on Thursday 21 May. Pūrṇimā runs from 13:02 on Wed 20 May to 11:38 on Thu 21 May, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1970/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 May
Ahargaṇa, classicalDisc centre, no refractionThu 21 May
compat-drikpanchangComparison profileThu 21 May
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/buddha-purnima · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles22:02 → 20:3812:2648 min12:260 min20 May
Chicago00:02 → 22:3812:2348 min12:230 min20 May
Jersey City01:02 → 23:3812:2948 min12:290 min20 May
Port of Spain01:02 → 23:3811:3948 min11:390 min20 May
London06:02 → 04:3812:3348 min12:330 min20 May
Durban07:02 → 05:3811:2848 min11:280 min20 May
Dubai09:02 → 07:3811:5148 min11:510 min20 May
Delhi10:32 → 09:0811:5448 min11:540 min20 May
Kolkata10:32 → 09:0811:0948 min11:090 min20 May
Singapore12:32 → 11:0812:0723 min12:070 min20 May
Sydney15:02 → 13:3811:270 min11:2748 min21 May
Suva17:02 → 15:3811:390 min11:3948 min21 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
buddha-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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