Ruling · Rādhāṣṭamī · 1912

Wednesday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 422 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 Wednesday 18 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Thursday 19 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

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 03:12 on Wed 18 Sep to 04:45 on Thu 19 Sep.

    1912-09-17T19:11:57Z → 1912-09-18T20:45:28Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 18th, 11:48–12:36 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 25338 s

  5. 05

    Ruling

    Rādhāṣṭamī, Baoding, 1912: Wednesday 18 September.

    confidence: determinate

Say it like this

In Baoding, Rādhāṣṭamī 1912 falls on Wednesday 18 September. Aṣṭamī runs from 03:12 on Wed 18 Sep to 04:45 on Thu 19 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1912/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 18 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 18 Sep
compat-drikpanchangComparison profileWed 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles11:12 → 12:4511:2348 min11:2348 min17 Sep
Chicago13:12 → 14:4511:210 min11:2048 min18 Sep
Jersey City14:12 → 15:4511:260 min11:2648 min18 Sep
Port of Spain15:12 → 16:4511:360 min11:3648 min18 Sep
London19:12 → 20:4511:310 min11:3048 min18 Sep
Durban21:12 → 22:4511:270 min11:2648 min18 Sep
Dubai22:53 → 00:2611:300 min11:3048 min18 Sep
Delhi00:42 → 02:1511:510 min11:5148 min18 Sep
Kolkata00:42 → 02:1511:070 min11:0748 min18 Sep
Singapore02:12 → 03:4511:350 min11:3548 min18 Sep
Sydney05:12 → 06:4511:260 min11:2648 min18 Sep
Suva07:07 → 08:4011:320 min11:3248 min18 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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