Ruling · Rādhāṣṭamī · 2030

Thursday 5 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 252 minutes.

Decide it for

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 Wednesday 4 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Thursday 5 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

48 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 18:58 on Wed 4 Sep to 16:53 on Thu 5 Sep.

    2030-09-04T10:58:23Z → 2030-09-05T08:53:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 4th, 11:53–12:41 on the 5th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.

    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 15143 s

  5. 05

    Ruling

    Rādhāṣṭamī, Baoding, 2030: Thursday 5 September.

    confidence: determinate

Say it like this

In Baoding, Rādhāṣṭamī 2030 falls on Thursday 5 September. Aṣṭamī runs from 18:58 on Wed 4 Sep to 16:53 on Thu 5 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2030/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 5 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 5 Sep
compat-drikpanchangComparison profileThu 5 Sep
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/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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles03:58 → 01:5312:2848 min12:270 min4 Sep
Chicago05:58 → 03:5312:2548 min12:250 min4 Sep
Jersey City06:58 → 04:5312:3148 min12:310 min4 Sep
Port of Spain06:58 → 04:5311:4148 min11:410 min4 Sep
London11:58 → 09:5312:3548 min12:350 min4 Sep
Durban12:58 → 10:5311:310 min11:310 min5 Sep
Dubai14:58 → 12:5311:540 min11:5348 min5 Sep
Delhi16:28 → 14:2311:560 min11:5648 min5 Sep
Kolkata16:28 → 14:2311:110 min11:1148 min5 Sep
Singapore18:58 → 16:5312:400 min12:3948 min5 Sep
Sydney20:58 → 18:5311:310 min11:3048 min5 Sep
Suva22:58 → 20:5311:420 min11:4148 min5 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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