On my enclosed back porch, the seedlings, now about 2-1/2 weeks since starting germination, think they're outdoors, and that it's Spring time.
Their covers are now left off all the time. For the occasional failed seedling, I go to the original germination cups and pluck a replacement. The lids of the cups are left ajar.
I'll keep the cups going for a few more weeks.
On my open front porch, I think I'm in my office, and that it's not yet Springtime.
Bob