Dates in attributes (@when vs @when-custom)

[eu-genia]

According to TEI Guidelines dates in @when @notBefore @notAfter etc must be provided in ISO standard in Gregorian calendar https://tei-c.org/release/doc/tei-p5-doc/en/html/ref-att.datable.w3c.html

Our Guidelines also follow this https://betamasaheft.eu/Guidelines/?id=dates

When you use date for other calendars (specifying the calendar type) the attribute to be used should be @when-custom

This is very important as in some calendars you may get dates that contradict the Gregorian calendar especially when you are being specific, e.g. the XML string

<date calendar="ethiopian" when="2016-02-30"> seemingly correct and standing for 30 Teqemt 2016 = 10 November 2023 or <date calendar="hijri" when="1446-02-30"> standing for 30 Safar 1446 = 3 September 2024 would result in validation errors as for TEI month number 2 is only February, and February cannot have 30 days.

In many Bm records the use is wrong or reverse, e.g. <date calendar="ethiopian" when="7405" when-custom="1913" evidence="internal"> in DSEthiop2 - the use is wrong, the alternative calendars must be in when-custom attribute

All records where non-Gregorian calendar is used must be checked and fixed

records with whenreferring to Ethiopian calendar in date

https://betamasaheft.eu/xpath.html?xpath=collection%28%24config%3Adata-root%29%2F%2Ft%3ATEI%5Bdescendant%3A%3At%3Adate%5Bcontains%28%40calendar%2C+%27ethiopian%27%29%5D%5B%40when%5D%5D

notBefore/notAfter https://betamasaheft.eu/xpath.html?xpath=collection%28%24config%3Adata-root%29%2F%2Ft%3ATEI%5Bdescendant%3A%3At%3Adate%5Bcontains%28%40calendar%2C+%27ethiopian%27%29%5D%5B%40notBefore%5D%5D

records with whenreferring to Ethiopian calendar in origDate https://betamasaheft.eu/xpath.html?xpath=collection%28%24config%3Adata-root%29%2F%2Ft%3ATEI%5Bdescendant%3A%3At%3AorigDate%5Bcontains%28%40calendar%2C+%27ethiopian%27%29%5D%5B%40when%5D%5D

notBefore/notAfter https://betamasaheft.eu/xpath.html?xpath=collection%28%24config%3Adata-root%29%2F%2Ft%3ATEI%5Bdescendant%3A%3At%3AorigDate%5Bcontains%28%40calendar%2C+%27ethiopian%27%29%5D%5B%40notBefore%5D%5D

[CarstenHoffmannMarburg]

If I understand you correctly, you want one of us to rework about 100 records listed in the links. I can do that job in the next one or two months.

[eu-genia]

Not all must be reworked, just if any of these are wrong and "yours". We all shall be doing it gradually, and have to take care for the future.

[CarstenHoffmannMarburg]

Not all must be reworked, just if any of these are wrong and "yours".

OK. I could identify BLorient11718A as the only one that is "mine". It is still in progress and not merged yet. I will try to fix its problem in the next pull request.

[DenisNosnitsin1970]

I will check d'Abbadie and Dair as-Suryan, and Turaev records.

[Ralph-Lee-UK]

Noted. I'll work through the EMIP records.

[CarstenHoffmannMarburg]

I can see no mistake in BLorient11718A (i.e. <date when-custom="1916" calendar="ethiopian" notBefore="1923" notAfter="1924">The Year of Grace, 1916</date>)

[eu-genia]

The list does not contain only mistakes, it contains all files with calendar ethiopian, to be checked and corrected only where necessary. It is impossible to have a list only with mistakes, as the computer cannot know which date is in which calendar. The example from BLorient11718A is correct.