L3 - Default The REST API uses a format without timezone identifier to (de-)serialize dates (format yyyy-MM-dd'T'HH:mm:ss). Thus, by default it uses the System's default timezone (java.util.Timezone#getDefault). In timezones with daylights saving time, it is therefore not possible to specify a date within the change of timezone offsets.
Example code:
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); Date before = dateFormat.parse("2015-10-25T01:10:00"); Date within = dateFormat.parse("2015-10-25T02:10:00"); Date after = dateFormat.parse("2015-10-25T03:10:00"); System.out.println(before); System.out.println(before.getTime()); System.out.println(within); System.out.println(within.getTime()); System.out.println(after); System.out.println(after.getTime());
prints
Sun Oct 25 01:10:00 CEST 2015 (=> 23:10:00 UTC) 1445728200000 Sun Oct 25 02:10:00 CET 2015 (=> 01:10:00 UTC) 1445735400000 Sun Oct 25 03:10:00 CET 2015 (=> 02:10:00 UTC) 1445739000000
=> It is not possible to define 00:10:00 UTC
Solution:
- allow users to configure date serialization format