Ruling · Rambhā Tṛtīyā · 2028

Saturday 27 May

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 00 s away. Say “contested”.

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 Friday 26 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 Saturday 27 May

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
Tṛtīyā ends 12:38:33
11:0411:2811:5212:1612:4013:0413:28

47 of 48 minutes covered, the first 47

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

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 14:11 on Fri 26 May to 12:39 on Sat 27 May.

    2028-05-26T06:10:36Z → 2028-05-27T04:38:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 26th, 11:52–12:40 on the 27th.

    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 26th and 47 of 48 on the 27th.

    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 60 s < 300 s

  5. 05

    Ruling

    Rambhā Tṛtīyā, Baoding, 2028: Saturday 27 May.

    confidence: boundary (margin)

Say it like this

In Baoding, Rambhā Tṛtīyā 2028 falls on Saturday 27 May. Tṛtīyā runs from 14:11 on Fri 26 May to 12:39 on Sat 27 May and covers 47 of 48 minutes of madhyāhna that midday. It is 1 min 00 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2028/rambha-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 27 May
Ahargaṇa, classicalDisc centre, no refractionSat 27 May
compat-drikpanchangComparison profileSat 27 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles23:11 → 21:3912:2648 min12:260 min26 May
Chicago01:11 → 23:3912:2448 min12:240 min26 May
Jersey City02:11 → 00:3912:3048 min12:300 min26 May
Port of Spain02:11 → 00:3911:3948 min11:390 min26 May
London07:11 → 05:3912:3448 min12:340 min26 May
Durban08:11 → 06:3911:2948 min11:290 min26 May
Dubai10:11 → 08:3911:5248 min11:520 min26 May
Delhi11:41 → 10:0911:5448 min11:540 min26 May
Kolkata11:41 → 10:0911:1017 min11:100 min26 May
Singapore14:11 → 12:3912:380 min12:381 min27 May
Sydney16:11 → 14:3911:280 min11:2848 min27 May
Suva18:11 → 16:3911:390 min11:3948 min27 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

About Ahargaṇa