Ruling · Yama Dvitīyā (Bhai Dooj) · 1952

Monday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 280 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 Monday 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 Tuesday 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 06:58 on Mon 20 Oct to 06:47 on Tue 21 Oct.

    1952-10-19T22:58:24Z → 1952-10-20T22:47:13Z

  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 16820 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1952: Monday 20 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1952 falls on Monday 20 October. Dvitīyā runs from 06:58 on Mon 20 Oct to 06:47 on Tue 21 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1952/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 20 Oct
compat-drikpanchangComparison profileMon 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 Angeles14:58 → 14:4711:140 min11:1348 min20 Oct
Chicago16:58 → 16:4711:110 min11:1148 min20 Oct
Jersey City17:58 → 17:4711:170 min11:1748 min20 Oct
Port of Spain18:58 → 18:4711:270 min11:2748 min20 Oct
London23:58 → 23:4712:210 min12:2148 min20 Oct
Durban00:58 → 00:4711:170 min11:1748 min20 Oct
Dubai02:58 → 02:4711:400 min11:3948 min20 Oct
Delhi04:28 → 04:1711:420 min11:4248 min20 Oct
Kolkata04:28 → 04:1710:570 min10:5748 min20 Oct
Singapore06:28 → 06:1711:560 min11:5548 min20 Oct
Sydney08:58 → 08:4711:170 min11:1648 min20 Oct
Suva10:58 → 10:4711:280 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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