nows as good a time as any

Nows as good a time as any is a phrase which is referring to the fact that this is a good occasion to do this particular thing which is being spoken about and that no harm will come from doing this thing right now. When someone says nows a good time as any, it is usually in response to being asked if you should do something now, no matter what this something happens to be. It is another way of saying you should do things now while you have the opportunity.