Ruling · Rādhāṣṭamī · 2048

Tuesday 15 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 485 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 Tuesday 15 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:11  11:59 madhyāhna ends
10:2310:4711:1111:3511:5912:2312:47

48 of 48 minutes covered

Midday of Wednesday 16 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:10  11:58 madhyāhna ends
10:2210:4611:1011:3411:5812:2212:46

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 03:06 on Tue 15 Sep to 01:02 on Wed 16 Sep.

    2048-09-14T19:06:03Z → 2048-09-15T17:01:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 15th, 11:10–11:58 on the 16th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 29080 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 2048: Tuesday 15 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 2048 falls on Tuesday 15 September. Aṣṭamī runs from 03:06 on Tue 15 Sep to 01:02 on Wed 16 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2048/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 15 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 15 Sep
compat-drikpanchangComparison profileTue 15 Sep
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/radhashtami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles12:06 → 10:0212:2448 min12:240 min14 Sep
Chicago14:06 → 12:0212:220 min12:210 min15 Sep
Jersey City15:06 → 13:0212:270 min12:2735 min15 Sep
Port of Spain15:06 → 13:0211:370 min11:3748 min15 Sep
London20:06 → 18:0212:310 min12:3148 min15 Sep
Durban21:06 → 19:0211:280 min11:2748 min15 Sep
Dubai23:06 → 21:0211:500 min11:5048 min15 Sep
Delhi00:36 → 22:3211:520 min11:5248 min15 Sep
Kolkata00:36 → 22:3211:080 min11:0848 min15 Sep
Singapore03:06 → 01:0212:360 min12:3648 min15 Sep
Sydney05:06 → 03:0211:270 min11:2748 min15 Sep
Suva07:06 → 05:0211:380 min11:3848 min15 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
radhashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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