Ruling · Rambhā Tṛtīyā · 2091

Monday 21 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 671 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 Sunday 20 May

Tṛtīyā is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Monday 21 May

Taken. The only midday Tṛtīyā reaches.

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

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 23:50 on Sun 20 May to 00:36 on Tue 22 May.

    2091-05-20T15:49:54Z → 2091-05-21T16:36:09Z

  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

    Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 40232 s

  5. 05

    Ruling

    Rambhā Tṛtīyā, Baoding, 2091: Monday 21 May.

    confidence: determinate

Say it like this

In Baoding, Rambhā Tṛtīyā 2091 falls on Monday 21 May. Tṛtīyā runs from 23:50 on Sun 20 May to 00:36 on Tue 22 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2091/rambha-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 May
Ahargaṇa, classicalDisc centre, no refractionMon 21 May
compat-drikpanchangComparison profileMon 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/rambha-tritiya · ruleset 2026.3-draft

Month
Jyeṣṭha, amānta
Pakṣa · aṅga
Śukla · Tṛtīyā
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 3 Rambha trtiya (purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceTṛtīyāMadhyāhna 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles08:50 → 09:3612:2648 min12:260 min20 May
Chicago10:50 → 11:3612:2448 min12:240 min20 May
Jersey City11:50 → 12:3612:3048 min12:307 min20 May
Port of Spain11:50 → 12:3611:3937 min11:3948 min20 May
London16:50 → 17:3612:340 min12:3448 min21 May
Durban17:50 → 18:3611:290 min11:2948 min21 May
Dubai19:50 → 20:3611:520 min11:5248 min21 May
Delhi21:20 → 22:0611:540 min11:5448 min21 May
Kolkata21:20 → 22:0611:100 min11:1048 min21 May
Singapore23:50 → 00:3612:380 min12:3848 min21 May
Sydney01:50 → 02:3611:280 min11:2848 min21 May
Suva03:50 → 04:3611:390 min11:3948 min21 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rambha-tritiya@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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