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I always like to sit at our doorsteps and watch out for girls passing by our house. This is my usual time pass.
The movie will be aired at 5 p.m. exactly but we have come almost 2 hours earlier(3 p.m.) to the theatre. Now we shall loiter around for a time pass and come back at 4.45.
I roam/wander/loiter around in the vicinity of our house during evening time for a time pass.

Please correct my sentences and also suggest me better versions. Thanks in advance.
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I think you are trying to use 'pass the time'. Time pass is meaningless. Try them again.
Comments  

Thanks Nona the Brit.
So I think "time pass" is incorrect expression which is more common in my part of the world.

Anyway, I've tried to rephrase the sentences as per your suggestions.

I always like to sit at our doorsteps and watch out for girls passing by our house. This is my usual way to pass my time.
The movie will be aired/screened at 5 p.m. exactly in the theatre but we have come almost 2 hours earlier (3 p.m.). So now we shall loiter around to pass up time and come back at 4.45 p.m.
I roam/wander/loiter around in the vicinity of our house during evening time to pass my time.