Ruling · Yama Dvitīyā (Bhai Dooj) · 1900

Thursday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 597 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 Thursday 25 October

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

48 of 48 minutes covered

Midday of Friday 26 October

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

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 23:47 on Wed 24 Oct to 01:46 on Fri 26 Oct.

    1900-10-24T15:41:47Z → 1900-10-25T17:40:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 25th, 11:43–12:31 on the 26th.

    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 25th and 0 of 48 on the 26th.

    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 35847 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1900: Thursday 25 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1900 falls on Thursday 25 October. Dvitīyā runs from 23:47 on Wed 24 Oct to 01:46 on Fri 26 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1900/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 25 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 25 Oct
compat-drikpanchangComparison profileThu 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles07:42 → 09:4111:1348 min11:130 min24 Oct
Chicago09:42 → 11:4111:1148 min11:1030 min24 Oct
Jersey City10:42 → 12:4111:1648 min11:1648 min24 Oct
Port of Spain11:42 → 13:4111:2633 min11:2648 min24 Oct
London15:42 → 17:4111:200 min11:2048 min25 Oct
Durban17:12 → 19:1110:460 min10:4648 min25 Oct
Dubai19:23 → 21:2211:200 min11:2048 min25 Oct
Delhi21:03 → 23:0211:320 min11:3248 min25 Oct
Kolkata21:03 → 23:0210:480 min10:4848 min25 Oct
Singapore22:37 → 00:3611:200 min11:2048 min25 Oct
Sydney01:42 → 03:4111:160 min11:1648 min25 Oct
Suva03:37 → 05:3611:220 min11:2248 min25 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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