Do we use acabar with certain time periods such as seasons? (e.g O verão acaba em Setembro.)
Do we use terminar with other time periods such as a stage of project and a deadline? (E.G. A praza termina hoje.)
@kareemdjerdjouri we have another topic where this is covered: Acabar vs. terminar 
Feel free to ask any follow-up questions over there, as I’m going to close this one to avoid duplication.