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Silbury Hill Sunset Azimuth on 1. September 3500BC is 299.8.
Silbury Hill Sunset Azimuth on 1. September 2024AD is 283.3.
I cannot believe in such big difference.
From which year Stellarium works…
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Hello,
There is a disparity between JRuby and MRI dealing with dates close to the calendar reform in Italy (i.e. 4th October of 1582). Using JRuby 1.7.13 and MRI 2.1.2:
``` ruby
>> require 'date'
=>…
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I was running a calendar conversion for Islamic hijri calendar. I stumbled across an error in interpreting one of the dates, which is between JD = 1976791,1976792. In julian calendar, that date is sup…
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I could not find any specs for dates before the reform to Gregorian calendar.
- How should October 4, 1582 be formatted?
- Is `1582-10-14` a valid date?
I suspect that you are unconsciously ass…
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### Environment
JRuby master (pre-9.1.6.0)
Rails master (pre-5.1)
### Expected Behavior
Date advancing should honor the 1582 time reformation in the following examples:
``` ruby
puts Date.new(1581,…
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**Symfony version(s) affected**: 4.2.x
**Description**
We encountered an issue with the BirthdayType and dates before the Gregorian calendar changes took place. I don't know the reason, but it…
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This is in the source:
```swift
/// This JDN corresponds to January 1, 45 BCE in the Julian calendar.
public static let effectiveJulianDayNumber: JulianDayNumber = 1704987
```
However in [wik…
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Let me first make a historical reminder. The Gregorian reform by Gregorius XIII changed the calendar from October 1582. It did not change any date before that. Therefore the Gregorian calendar follows…
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I was looking at the [entry](https://www.fihrist.org.uk/catalog/manuscript_6810) for Persian MS 317 in the John Rylands Library, University of Manchester, and noticed that the CE conversion of the col…
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We have a need in our calendar app for extremely short abbreviations or shortened names for House committees, in order to fit the names onto event chips in the calendar. This would fit well in the dat…