I just notice that Daylight Simulations in Revit are wrong.
Revit does not apply summer time by default/doesn´t recognise when it has to be applied. But whenever it is manual check the summer time is also in winter apply, which means that in winter is the time false.
It is more something that has to be mend als something to improve. Daylight Simulations are 1hr shift half the time, if a simulation is done all over a year. Making that 2 simulations (one for summer one for winter) have to be run in order to get proper results. Most users will never notice it. Even when they find the option "Summer Time", they will assume that it is working just in summer, as expected.
Estimations for future DTS dates are available online: eg. https://www.timeanddate.com/time/dst/2019.html
but easier to implement is the option to enter manually the dates right when you check the "Summer Time".
https://forums.autodesk.com/t5/revit-architecture-forum/revit-daylight-saving-accuracy/m-p/3760863#M...
https://forums.autodesk.com/t5/revit-ideas/daylight-savings-time-tick-box/idc-p/7346659#M11219