Ruling · Yama Dvitīyā (Bhrātṛ Dvitīyā) · 2017

Saturday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 368 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 October

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Sunday 22 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 04:07 on Sat 21 Oct to 05:31 on Sun 22 Oct.

    2017-10-20T20:07:21Z → 2017-10-21T21:30:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 21st, 11:38–12:26 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 22063 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 2017: Saturday 21 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 2017 falls on Saturday 21 October. Dvitīyā runs from 04:07 on Sat 21 Oct to 05:31 on Sun 22 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2017/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 21 Oct
compat-drikpanchangComparison profileSat 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles13:07 → 14:3112:130 min12:1348 min21 Oct
Chicago15:07 → 16:3112:110 min12:1148 min21 Oct
Jersey City16:07 → 17:3112:170 min12:1748 min21 Oct
Port of Spain16:07 → 17:3111:270 min11:2748 min21 Oct
London21:07 → 22:3112:210 min12:2148 min21 Oct
Durban22:07 → 23:3111:170 min11:1748 min21 Oct
Dubai00:07 → 01:3111:390 min11:3948 min21 Oct
Delhi01:37 → 03:0111:420 min11:4248 min21 Oct
Kolkata01:37 → 03:0110:570 min10:5748 min21 Oct
Singapore04:07 → 05:3112:250 min12:2548 min21 Oct
Sydney07:07 → 08:3112:160 min12:1648 min21 Oct
Suva08:07 → 09:3111:270 min11:2748 min21 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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