Ruling · Yama Dvitīyā (Bhai Dooj) · 1990

Saturday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 498 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 20 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 21 October

Dvitīyā is absent from madhyāhna. Not taken.

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

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 01:18 on Sat 20 Oct to 03:21 on Sun 21 Oct.

    1990-10-19T17:17:35Z → 1990-10-20T19:20:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 20th, 11:39–12:27 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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 29883 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1990: Saturday 20 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1990 falls on Saturday 20 October. Dvitīyā runs from 01:18 on Sat 20 Oct to 03:21 on Sun 21 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1990/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 20 Oct
compat-drikpanchangComparison profileSat 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles10:18 → 12:2112:1448 min12:147 min19 Oct
Chicago12:18 → 14:2112:1142 min12:1148 min19 Oct
Jersey City13:18 → 15:2112:170 min12:1748 min20 Oct
Port of Spain13:18 → 15:2111:270 min11:2748 min20 Oct
London18:18 → 20:2112:210 min12:2148 min20 Oct
Durban19:18 → 21:2111:170 min11:1748 min20 Oct
Dubai21:18 → 23:2111:400 min11:3948 min20 Oct
Delhi22:48 → 00:5111:420 min11:4248 min20 Oct
Kolkata22:48 → 00:5110:570 min10:5748 min20 Oct
Singapore01:18 → 03:2112:260 min12:2648 min20 Oct
Sydney03:18 → 05:2111:170 min11:1648 min20 Oct
Suva05:18 → 07:2111:280 min11:2748 min20 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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