Problem with "summer" time (DST)

We have problem with datetime fields, when we work with HXE using ngdbc.jar (in eclipse or in own application).

Problem is in hours, when summer time is starting/ending.

For example this select shown different data, than are entered:

select to_seconddate('2017-03-26 01:00:00'), to_seconddate('2017-03-26 02:00:00'), to_seconddate('2017-10-29 01:00:00') from dummy;

Bad result: 26.03.2017 00:00:00, 26.03.2017 01:00:00, 29.10.2017 02:00:00

We don't know, how we can turn off this behaviour.