Ruling · Yama Dvitīyā (Bhai Dooj) · 1933

Friday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 25 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 Friday 20 October

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
Dvitīyā begins 11:13:20
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Saturday 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 11:13 on Fri 20 Oct to 08:25 on Sat 21 Oct.

    1933-10-20T03:13:20Z → 1933-10-21T00:25:27Z

  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 1529 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1933: Friday 20 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1933 falls on Friday 20 October. Dvitīyā runs from 11:13 on Fri 20 Oct to 08:25 on Sat 21 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1933/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 20 Oct
compat-drikpanchangComparison profileFri 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles19:13 → 16:2511:1448 min11:130 min20 Oct
Chicago21:13 → 18:2511:1148 min11:110 min20 Oct
Jersey City22:13 → 19:2511:1748 min11:170 min20 Oct
Port of Spain23:13 → 20:2511:2748 min11:270 min20 Oct
London03:13 → 00:2511:2148 min11:210 min20 Oct
Durban05:13 → 02:2511:1748 min11:170 min20 Oct
Dubai07:13 → 04:2511:4048 min11:390 min20 Oct
Delhi08:43 → 05:5511:4248 min11:420 min20 Oct
Kolkata08:43 → 05:5510:5748 min10:570 min20 Oct
Singapore10:33 → 07:4511:4648 min11:450 min20 Oct
Sydney13:13 → 10:2511:160 min11:160 min21 Oct
Suva15:13 → 12:2511:270 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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