Don't go by your local standard time, winter saving or summer saving times. Taking Sun's culmination (highest near Zenith) as (local) 12:00 noon, Sun rises at 06:00 am and sets at 06:00 pm on equinoxes (21 March & 23 September).
As Summer increases he rises early, sets late. In peak summer it is earliest sunrise and latest sunset.
The revere happens in winter. It depends on your (latitude).
I'll give a formula for correction, that you need to apply to the 06:00 am sunrise and to 06:00 pm sunset.
It is a Trigonometric formula:
tan(time) = tan(latitude) X cos(days)
where 4 multiplied by (time) in minutes is to be subtracted (if it is +) or added (if it is -) to sunrise 06:00 am (and reverse for 06:00 pm sunset).
(days) is the number of days on either side of Summer solstice, 21 June, multiplied by 360/365.242219 (= 0.985647) before finding cos(days).
For winter days " cos(days) " with a negative sign should be used. Number of (days) should be reckoned from winter solstice (22 December).