It depends on where you live and the weather.
No one needs to post their location if they don't want to, but if you look up your zone on the USDA hardiness map, and add your zone # to your profile, it helps people answer this type of question. For example, people in areas of the south are already moving their plants outdoors because they know they are past any last frost risk. Me? I wait until Memorial Day weekend.
I love starting plants from seed- it's always amazing to me!
Edit: Right after I posted I realized you were a new member. Welcome!!! It's really fun around here....