Ruling · Yama Dvitīyā (Bhai Dooj) · 1987

Saturday 24 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 650 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 24 October

Taken. The only midday Dvitīyā reaches.

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

48 of 48 minutes covered

Midday of Sunday 25 October

Dvitīyā is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 00:48 on Sat 24 Oct to 23:41 on Sat 24 Oct.

    1987-10-23T16:48:06Z → 1987-10-24T15:40:37Z

  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 48 of 48 minutes on the 24th and 0 of 48 on the 25th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 39006 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1987: Saturday 24 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1987 falls on Saturday 24 October. Dvitīyā runs from 00:48 on Sat 24 Oct to 23:41 on Sat 24 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles09:48 → 08:4112:1348 min12:130 min23 Oct
Chicago11:48 → 10:4112:1148 min12:110 min23 Oct
Jersey City12:48 → 11:4112:1616 min12:160 min23 Oct
Port of Spain12:48 → 11:4111:260 min11:2614 min24 Oct
London17:48 → 16:4112:210 min12:2048 min24 Oct
Durban18:48 → 17:4111:170 min11:1648 min24 Oct
Dubai20:48 → 19:4111:390 min11:3948 min24 Oct
Delhi22:18 → 21:1111:410 min11:4148 min24 Oct
Kolkata22:18 → 21:1110:570 min10:5748 min24 Oct
Singapore00:48 → 23:4112:250 min12:2548 min24 Oct
Sydney02:48 → 01:4111:160 min11:1648 min24 Oct
Suva04:48 → 03:4111:270 min11:2748 min24 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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