Schengen Visa - Is it okay to arrive after visa start date?
 

Sorry if this is a dumb question, but my girlfriend who is a Russian citizen was granted a Schengen visa from Greece for 1 year and I was wondering if it was necessary for her to travel exactly on the visa start date. The embassy required proof of paid flights and accommodations before they would grant a visa. Is it okay to travel weeks or even months after the visa start date?

yes, its okay.

No problem

Got it. Thanks for taking the time to answer!

She can enter any time within the validity dates. Her stay cannot be longer than the length of the visa validity

She can arrive in the Schengen area at any time within the granted validity of the visa but when she arrives (for example) 3 months after the first day of the validity she already "lost" these three months because it is not possible to extend the visa beyond the last day of the visa.
She has to leave the Schengen area at latest on the date stated on the visa.