(rookie here) How long until harvest?

This is my first successful run. I was hoping one of the seasoned vet's could take a look at my photos. If you had to guess, how long until I should harvest these lovely ladies? It's snow white strain with a little nuit burn....thanks in advance.

cant tell by looking, and also depends on what type of high you want, a clear head high=milky, clear trichs, a couchlock high=amber trichs.

thanks everyone for the advice....

looks like white widow??

If so - it needs 70 days from the first sign of preflowers.