Date Diff NOW and captured date

1

how to I tell if:

now - "Thu, 12 Mar 2015 10:47:11 -0400" as time)

…is > than 60 min?

2

(now - “Thu, 12 Mar 2015 10:47:11 -0400” as time) > 60*minute

3

Awesome, that was perfect. Thanks!