Don't panic.

Try taking a walk around outside and shake some treats - call his name gently. If you're upset he'll hear it in your voice. So just try to sound 'normal'. Maybe he's just gone 'walkabout' to see what's going on? Cats are very nosey

It's still daylight with you isn't it? So he's got time to come home before nightfall Remember don't get yourself upset. Look for him.

Lynne