I usually meditate in the morning. If I miss or skip for some reason, I always do my best to make it up some time later in the day.
Meditating for me is a time to relax my mind. If I can do it in one go I would though from time to time I find my mind wonder too often. In this case I would do it in 2 go the next day I shorter time spans. Once in the morning and another at night.