| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Alex Ignatov <a(dot)ignatov(at)postgrespro(dot)ru>, pgsql-docs(at)postgresql(dot)org |
| Subject: | Re: to_date 'J' format misunderstanding |
| Date: | 2016-04-16 16:39:47 |
| Message-ID: | 57126AD3.1090406@gmx.net |
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| Lists: | pgsql-docs |
On 03/09/2016 06:42 AM, Alex Ignatov wrote:
> In Table 9-22. Template Patterns for Date/Time Formatting we have
>
> 'J Julian Day (days since November 24, 4714 BC at midnight)'
>
> But there is no any information about what calender use for date of
> November 24, 4714 BC. From wikipedia we know that it is
> November 24, 4714 BC, in the proleptic Gregorian calendar.
I don't think we need to overdocument this. The Julian Day is defined
outside of PostgreSQL, and those who are considering using it will know
about these kinds of details.
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