On 2018-01-22 11:55, Steve Allen wrote:
On Mon 2018-01-22T18:47:07+0000 Stephen Colebourne hath writ:
Does newer Java code (Java 9, ThreeTen-Backport) also have these limitations? No. The biggest limit is that offsets are constrained to -18 to +18 hours.
The traditional calendar for observing at Lick Observatory has always had days begin at local noon. This means that the time zone for the Lick calendar is 20 hours behind Greenwich. I implore all implementors to accommodate local time zones which are not limited to the list that is part of tzdb.
In a similar vein, there may still be some legacy code in some PPoE(s), which for scheduling treats legal 09.00 C{S|D}T as the start of the day, various periods as subdivisions of that day, Nov 1 as the start of the year, Nov-Mar and Apr-Oct as seasons, with appropriately adjusted treatment of weeks and months. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada