@Evelyn ******
Ah ok. That doesn't work then. If you had an early morning flight as long as you cleared immigration before midnight it doesn't actually matter what time you physically leave the country. But yeah, won't work for you. At the airport there's no fine for one day overstay, but you do get a small "overstay fine waived" stamp. It's not a full-blown OVERSTAY stamp, and it won't affect any subsequent visits. However, the general feeling in this group is never overstay, so perhaps better to get the extension