It is completely subjective and thus not a question that is easily answerable.
What I mean by this is that it all depends on a what approach the cracker takes. If it is a simple sequential brute force through the key space at one thousand guesses per second then it would take a very long long time to crack since iterating through that key space and testing each combination of the letters and numbers will take approximately 64.65 billion centuries.
But, and this is a big but, given that we know password crackers don't use simple brute force techniques very often this will most likely not be the case. Password crackers make use of much more intelligent and complex targeted techniques that involve massive dictionaries of breached passwords and word lists ans well as rainbow tables and even statistical techniques involving Markov chains to make the guessing of password a much more intelligent process making it less of simple a shot in the dark.
This means that if the attacker had you name and surname they could probably guess your password in a significantly shorter span of time (a few hours to a few days) using different combinations of your name and surname structured strategically. You password should never be constructed from some combination of personally identifiable data that is there to be seen by all.
If you were thinking of using a password like this, don't! Your password should ideally be a reasonably long sequence of random numbers, letters and special characters that are of no significance to you and does not represent natural language and names or surnames in any way.