Ruling · Ṛṣi Tarpaṇa · 2021

Sunday 22 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 437 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 Saturday 21 August

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

0 of 48 minutes covered

Midday of Sunday 22 August

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

48 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 21:31 on Sat 21 Aug to 20:02 on Sun 22 Aug.

    2021-08-21T13:30:49Z → 2021-08-22T12:01:58Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 21st, 11:57–12:45 on the 22nd.

    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 21st and 48 of 48 on the 22nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 26234 s

  5. 05

    Ruling

    Ṛṣi Tarpaṇa, Baoding, 2021: Sunday 22 August.

    confidence: determinate

Say it like this

In Baoding, Ṛṣi Tarpaṇa 2021 falls on Sunday 22 August. Pūrṇimā runs from 21:31 on Sat 21 Aug to 20:02 on Sun 22 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2021/rishi-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 22 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 22 Aug
compat-drikpanchangComparison profileSun 22 Aug
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/rishi-tarpana · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles06:31 → 05:0212:3248 min12:310 min21 Aug
Chicago08:31 → 07:0212:2948 min12:290 min21 Aug
Jersey City09:31 → 08:0212:3548 min12:350 min21 Aug
Port of Spain09:31 → 08:0211:4548 min11:450 min21 Aug
London14:31 → 13:0212:390 min12:3923 min22 Aug
Durban15:31 → 14:0211:350 min11:3548 min22 Aug
Dubai17:31 → 16:0211:580 min11:5748 min22 Aug
Delhi19:01 → 17:3212:000 min12:0048 min22 Aug
Kolkata19:01 → 17:3211:160 min11:1548 min22 Aug
Singapore21:31 → 20:0212:440 min12:4348 min22 Aug
Sydney23:31 → 22:0211:350 min11:3448 min22 Aug
Suva01:31 → 00:0211:460 min11:4548 min22 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rishi-tarpana@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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