What's the difference between 以後 and 以降


I've seen these words used in the following sentences:

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    以後: それ以後彼女に会っていません
    以降: それ以降彼は辛い一生を送った
    
[/code]

Judging from these examples alone, I guess they have some kind of overlap.

When is it appropriate to use one over the other?




I tend to think of `以後` as meaning `one or more specific points after` whereas
`以降` means `most of/the whole time after`. But I'm not positive that they
don't overlap at all.

