2) Consider a late afternoon ceremony in summer!
Sunset can be as late as 9pm in Tassie in summer. This is because we are so far away from the equator. We have really long days in summer and really short days in winter.
Plan your wedding accordingly! In Queensland you might get away with a 2pm ceremony in the middle of summer, but in Tasmania the sun is right above your head at this time and sets at around 9pm in January. You will get harsh unflattering shadows on your face and you might not love this in your photos!
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For your own wedding, jump on google and search "Sunset time [ location ] [ date ] " consider your timeline and when you are getting photos.