Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2018   09:40:42   (   0.15,-127.91) (  -0.64,-124.29)  412.21                80
 11/11/2018   22:02:40   (  -0.12,-127.88) (  -0.50,-129.61)  196.99                80
 11/12/2018   21:46:35   (  -0.13,-127.92) (   0.51,-125.08)  323.71                80
 11/14/2018   10:05:43   (   0.10,-128.07) (   0.63,-130.36)  261.69                80
 11/15/2018   09:49:39   (   0.11,-128.10) (  -0.39,-125.83)  258.25                80
 11/16/2018   22:08:56   (  -0.08,-128.05) (  -0.75,-131.15)  352.71                80
 11/17/2018   21:52:51   (  -0.10,-128.09) (   0.21,-126.61)  167.60                80
 11/19/2018   10:12:00   (   0.07,-128.24) (   0.87,-131.90)  417.37                80
 11/20/2018   09:53:15   (   0.09,-128.26) (  -0.09,-127.36)  102.21                80
 11/22/2018   21:59:07   (  -0.07,-128.23) (  -0.03,-128.15)    9.38                80