Hello,

1) when I create date on: 2017/03/20 (before Daylight Saving Time change) with this code:

D1 := Date year: 2017 month: 3 day: 26.

Date object is created with instvars:
start: 2017-03-26T00:00:00+01:00
duration: 1:00:00:00

2) when I create same Date instance with the same code on/after: 2017/03/26 (after Daylight Saving Time change):

D2 := Date year: 2017 month: 3 day: 26.

Date instance with this instvars returned:
start: 2017-03-26T00:00:00+02:00
duration: 1:00:00:00

3) D1 != D2

So, for example: persisted instance of date (Date year: 2017 month: 3 day: 26) created before DST change is not equal with date instance (Date year: 2017 month: 3 day: 26) created after DST change.
DST change breaks equality of the same date :(

Is it OK?

Thanks! Petr Fischer