Ruling · Rathayātrā · 2015

Saturday 18 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 6 min 04 s.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Friday 17 July

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
10:3410:5811:2211:4612:1012:3412:58

48 of 48 minutes covered

Midday of Saturday 18 July

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:22  12:10 madhyāhna ends
Dvitīyā ends 11:27:56
10:3410:5811:2211:4612:1012:3412:58

6 of 48 minutes covered, the first 6

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 10:10 on Fri 17 Jul to 11:28 on Sat 18 Jul.

    2015-07-17T02:10:15Z → 2015-07-18T03:27:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 17th, 11:22–12:10 on the 18th.

    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 17th and 6 of 48 on the 18th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 364 s

  5. 05

    Ruling

    Rathayātrā, Daqing, 2015: Saturday 18 July.

    confidence: determinate

Say it like this

In Daqing, Rathayātrā 2015 falls on Saturday 18 July. Dvitīyā runs from 10:10 on Fri 17 Jul to 11:28 on Sat 18 Jul and covers 6 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/daqing/festivals/2015/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 18 Jul
compat-drikpanchangComparison profileSat 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles19:10 → 20:2812:3548 min12:350 min17 Jul
Chicago21:10 → 22:2812:3348 min12:330 min17 Jul
Jersey City22:10 → 23:2812:3848 min12:380 min17 Jul
Port of Spain22:10 → 23:2811:4848 min11:480 min17 Jul
London03:10 → 04:2812:4248 min12:420 min17 Jul
Durban04:10 → 05:2811:3848 min11:380 min17 Jul
Dubai06:10 → 07:2812:0148 min12:010 min17 Jul
Delhi07:40 → 08:5812:0348 min12:030 min17 Jul
Kolkata07:40 → 08:5811:1948 min11:190 min17 Jul
Singapore10:10 → 11:2812:4748 min12:470 min17 Jul
Sydney12:10 → 13:2811:3715 min11:3748 min18 Jul
Suva14:10 → 15:2811:480 min11:4948 min18 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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