September 1918 · each Moon as it stands at sunriseŚrāvaṇa Kṛṣṇa to Bhādrapada KṛṣṇaThe month ›

Ruling · 1918 · Kunming

Rādhāṣṭamī

Friday 13 September1918 · Kunming, Yunnan, China

Determinatemargin 74 min

In Kunming, under the Rashtriya Panchang method. Clear of every threshold by 74 minutes.

Decide it forKunmingDelhiKolkataSingaporeSydneyJersey City25°02′ N 102°43′ E · Asia/Shanghai · GeoNames 1804651

The two middays मध्याह्न

One ghaṭī is 24 minutes

Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 13 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:41  13:29 madhyāhna ends
11:5312:1712:4113:0513:2913:5314:17

48 of 48 minutes covered

Midday of Saturday 14 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:41  13:29 madhyāhna ends
11:5312:1712:4113:0513:2913:5314:17

0 of 48 minutes covered

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

How it was decided निर्णय

  1. Step 1, Aṅga

    Aṣṭamī runs from 10:26 on Fri 13 Sep to 11:27 on Sat 14 Sep.

    1918-09-13T02:25:47Z → 1918-09-14T03:26:47Z
  2. Step 2, Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 13th, 12:41–13:29 on the 14th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
  3. Step 3, Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
  4. Step 4, Tie-break

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

    priority: unstated → only-day · margin 4443 s
  5. Step 5, Ruling

    Rādhāṣṭamī, Kunming, 1918: Friday 13 September.

    confidence: determinate

Say it like this

In Kunming, Rādhāṣṭamī 1918 falls on Friday 13 September. Aṣṭamī runs from 10:26 on Fri 13 Sep to 11:27 on Sat 14 Sep and covers all of madhyāhna that midday.

ahargana.org/kunming/festivals/1918/radhashtamipac-rp@2026.1

Who says what

never edited to agree

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 13 Sep
compat-drikpanchangComparison profileFri 13 Sep
No institution has a recorded ruling for Kunming.

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 clocks

PlaceAṣṭamīMadhyāhna 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles19:26 → 20:2712:2548 min12:240 min13 Sep
Chicago21:26 → 22:2712:2248 min12:220 min13 Sep
Jersey City22:26 → 23:2712:2848 min12:280 min13 Sep
Port of Spain22:26 → 23:2711:3848 min11:380 min13 Sep
London03:26 → 04:2712:3248 min12:320 min13 Sep
Durban04:26 → 05:2711:2848 min11:280 min13 Sep
Dubai06:07 → 07:0811:3248 min11:310 min13 Sep
Delhi07:56 → 08:5711:5348 min11:530 min13 Sep
Kolkata07:56 → 08:5711:0948 min11:080 min13 Sep
Singapore09:26 → 10:2711:3748 min11:360 min13 Sep
Sydney12:26 → 13:2711:280 min11:2748 min14 Sep
Suva14:26 → 15:2711:390 min11:3848 min14 Sep
This ruling as JSON · ICS
Profile · tradition
pac-rp@2026.1 · smarta
Rule
radhashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s