Ruling · Guru Pūrṇimā · 1977

Friday 1 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 34 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 30 June

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 1 July

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

madhyāhna begins 11:58  12:46 madhyāhna ends
Pūrṇimā ends 11:24:01
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 15:03 on Thu 30 Jun to 11:24 on Fri 1 Jul.

    1977-06-30T07:03:20Z → 1977-07-01T03:24:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 30th, 11:58–12:46 on the 1st.

    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 30th and 0 of 48 on the 1st.

    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 2024 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1977: Friday 1 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1977 falls on Friday 1 July. Pūrṇimā runs from 15:03 on Thu 30 Jun to 11:24 on Fri 1 Jul, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1977/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 1 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 1 Jul
compat-drikpanchangComparison profileFri 1 Jul
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/guru-purnima · ruleset 2026.3-draft

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

“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 30thCoveredMadhyāhna 1stCoveredRuled
Los Angeles00:03 → 20:2412:3348 min12:330 min30 Jun
Chicago02:03 → 22:2412:3048 min12:300 min30 Jun
Jersey City03:03 → 23:2412:3648 min12:360 min30 Jun
Port of Spain03:03 → 23:2411:4648 min11:460 min30 Jun
London08:03 → 04:2412:4048 min12:400 min30 Jun
Durban09:03 → 05:2411:3548 min11:360 min30 Jun
Dubai11:03 → 07:2411:5848 min11:580 min30 Jun
Delhi12:33 → 08:5412:0115 min12:010 min30 Jun
Kolkata12:33 → 08:5411:160 min11:160 min1 Jul
Singapore14:33 → 10:5412:140 min12:140 min1 Jul
Sydney17:03 → 13:2411:350 min11:3548 min1 Jul
Suva19:03 → 15:2411:460 min11:4648 min1 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
guru-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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