This page shows the different variations of the Strefa czasowa +2 from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
This logo displays an unfolded road map with a small circle slightly overlapping the bottom right corner of it. Within the circle is a "+2", signalling the amount of hours to add to get the current time zone of that location.