Advanced Grammar

Time Prepositions in-on-at 
(Zaman edatları) 

in
We use in when we are discussing parts of the day, month,
season or the year:
"In" günün bölümlerinden, ay, mevsim ve yıllardan önce kullanılır.

- I don't work very hard in the morning, but I rest in the afternoon.

-I don't mind working in the evening, but I hate to get up early in the   
  morning.

-These fox cubs were born in the spring. ~ In April or May? ~
  I'm not sure. In April, I think.

-They'll be ready to leave home and fend for themselves in about
  three weeks from now.