Ruling · Yama Dvitīyā (Bhai Dooj) · 1930

Thursday 23 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 477 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 23 October

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

Midday of Friday 24 October

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

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 03:42 on Thu 23 Oct to 02:07 on Fri 24 Oct.

    1930-10-22T19:41:44Z → 1930-10-23T18:06:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 23rd, 11:38–12:26 on the 24th.

    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 23rd and 0 of 48 on the 24th.

    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 28600 s

  5. 05

    Ruling

    Yama Dvitīyā, Baoding, 1930: Thursday 23 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dvitīyā (Bhai Dooj) 1930 falls on Thursday 23 October. Dvitīyā runs from 03:42 on Thu 23 Oct to 02:07 on Fri 24 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1930/yama-dvitiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 23 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 23 Oct
compat-drikpanchangComparison profileThu 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles11:42 → 10:0711:1320 min11:130 min22 Oct
Chicago13:42 → 12:0711:110 min11:1148 min23 Oct
Jersey City14:42 → 13:0711:170 min11:1648 min23 Oct
Port of Spain15:42 → 14:0711:270 min11:2648 min23 Oct
London19:42 → 18:0711:210 min11:2148 min23 Oct
Durban21:42 → 20:0711:170 min11:1748 min23 Oct
Dubai23:42 → 22:0711:390 min11:3948 min23 Oct
Delhi01:12 → 23:3711:420 min11:4148 min23 Oct
Kolkata01:12 → 23:3710:570 min10:5748 min23 Oct
Singapore02:42 → 01:0711:250 min11:2548 min23 Oct
Sydney05:42 → 04:0711:160 min11:1648 min23 Oct
Suva07:42 → 06:0711:270 min11:2748 min23 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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