Ruling · Yama Dvitīyā (Bhai Dooj) · 2071

Saturday 24 October

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 35 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 Saturday 24 October

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:38  12:26 madhyāhna ends
Dvitīyā begins 11:58:28
10:5011:1411:3812:0212:2612:5013:14

28 of 48 minutes covered, the last 28

Midday of Sunday 25 October

Qualifies with 1 of 48 minutes. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Dvitīyā ends 11:38:42
10:5011:1411:3812:0212:2612:5013:14

1 of 48 minutes covered, the first 1

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 11:58 on Sat 24 Oct to 11:39 on Sun 25 Oct.

    2071-10-24T03:58:29Z → 2071-10-25T03:38:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 24th, 11:38–12:26 on the 25th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 28 of 48 minutes on the 24th and 1 of 48 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 35 s < 300 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 2071: Saturday 24 October.

    confidence: boundary (margin)

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 2071 falls on Saturday 24 October. Dvitīyā runs from 11:58 on Sat 24 Oct to 11:39 on Sun 25 Oct and covers 28 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 1 minutes; by the rule the first midday is taken. It is 0 min 35 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2071/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 24 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 24 Oct
compat-drikpanchangComparison profileSat 24 Oct
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/yama-dvitiya · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Dvitīyā
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvitīyāMadhyāhna 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles20:58 → 20:3912:1348 min12:130 min24 Oct
Chicago22:58 → 22:3912:1148 min12:100 min24 Oct
Jersey City23:58 → 23:3912:1648 min12:160 min24 Oct
Port of Spain23:58 → 23:3911:2648 min11:260 min24 Oct
London04:58 → 03:3912:2048 min11:200 min24 Oct
Durban05:58 → 05:3911:1648 min11:160 min24 Oct
Dubai07:58 → 07:3911:3948 min11:390 min24 Oct
Delhi09:28 → 09:0911:4148 min11:410 min24 Oct
Kolkata09:28 → 09:0910:5748 min10:570 min24 Oct
Singapore11:58 → 11:3912:2548 min12:250 min24 Oct
Sydney14:58 → 14:3912:160 min12:1648 min25 Oct
Suva15:58 → 15:3911:270 min11:2748 min25 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
yama-dvitiya@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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