Ruling · Rathayātrā · 1975

Thursday 10 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 109 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 10 July

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

48 of 48 minutes covered

Midday of Friday 11 July

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

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 09:32 on Thu 10 Jul to 06:36 on Fri 11 Jul.

    1975-07-10T01:31:36Z → 1975-07-10T22:36:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 10th, 11:21–12:09 on the 11th.

    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 10th and 0 of 48 on the 11th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 6561 s

  5. 05

    Ruling

    Rathayātrā, Daqing, 1975: Thursday 10 July.

    confidence: determinate

Say it like this

In Daqing, Rathayātrā 1975 falls on Thursday 10 July. Dvitīyā runs from 09:32 on Thu 10 Jul to 06:36 on Fri 11 Jul and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1975/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 10 Jul
compat-drikpanchangComparison profileThu 10 Jul
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/rathayatra · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Dvitīyā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102. The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvitīyāMadhyāhna 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles18:32 → 15:3612:3448 min12:340 min10 Jul
Chicago20:32 → 17:3612:3248 min12:320 min10 Jul
Jersey City21:32 → 18:3612:3748 min12:380 min10 Jul
Port of Spain21:32 → 18:3611:4748 min11:470 min10 Jul
London02:32 → 23:3612:4148 min12:420 min10 Jul
Durban03:32 → 00:3611:3748 min11:370 min10 Jul
Dubai05:32 → 02:3612:0048 min12:000 min10 Jul
Delhi07:02 → 04:0612:0248 min12:020 min10 Jul
Kolkata07:02 → 04:0611:1848 min11:180 min10 Jul
Singapore09:02 → 06:0612:1648 min12:160 min10 Jul
Sydney11:32 → 08:3611:3648 min11:370 min10 Jul
Suva13:32 → 10:3611:470 min11:480 min11 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rathayatra@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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