Ruling · Yama Dvitīyā (Bhai Dooj) · 1939

Monday 13 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 57 minutes.

Decide it for

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 Sunday 12 November

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

Midday of Monday 13 November

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

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 14:23 on Sun 12 Nov to 13:23 on Mon 13 Nov.

    1939-11-12T06:22:47Z → 1939-11-13T05:23:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 12th, 11:38–12:26 on the 13th.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.

    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 3412 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1939: Monday 13 November.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1939 falls on Monday 13 November. Dvitīyā runs from 14:23 on Sun 12 Nov to 13:23 on Mon 13 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1939/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 13 Nov
Ahargaṇa, classicalDisc centre, no refractionMon 13 Nov
compat-drikpanchangComparison profileMon 13 Nov
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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles22:23 → 21:2311:1348 min11:130 min12 Nov
Chicago00:23 → 23:2311:1148 min11:110 min12 Nov
Jersey City01:23 → 00:2311:1648 min11:160 min12 Nov
Port of Spain02:23 → 01:2311:2648 min11:260 min12 Nov
London07:23 → 06:2312:2048 min12:200 min12 Nov
Durban08:23 → 07:2311:1648 min11:160 min12 Nov
Dubai10:23 → 09:2311:3948 min11:390 min12 Nov
Delhi11:53 → 10:5311:4136 min11:410 min12 Nov
Kolkata11:53 → 10:5310:570 min10:570 min13 Nov
Singapore13:43 → 12:4311:450 min11:4548 min13 Nov
Sydney16:23 → 15:2311:150 min11:1648 min13 Nov
Suva18:23 → 17:2311:260 min11:2748 min13 Nov
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

About Ahargaṇa