Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/16/2018   10:05:46   (  -0.02,-128.67) (   0.37,-130.46)  203.19                80
 12/17/2018   09:49:41   (  -0.01,-128.67) (  -0.60,-125.92)  313.45                80
 12/18/2018   22:08:57   (   0.03,-128.56) (  -0.59,-131.22)  304.08                80
 12/19/2018   21:52:53   (   0.01,-128.56) (   0.45,-126.70)  212.45                80
 12/21/2018   10:12:01   (  -0.03,-128.67) (   0.68,-131.98)  376.79                80
 12/22/2018   09:55:55   (  -0.02,-128.66) (  -0.29,-127.44)  138.93                80
 12/23/2018   22:15:12   (   0.03,-128.52) (  -0.88,-132.75)  480.54                80
 12/24/2018   21:59:06   (   0.03,-128.51) (   0.09,-128.21)   34.94                80
 12/27/2018   09:59:29   (  -0.03,-128.60) (   0.06,-128.95)   40.07                80
 12/28/2018   09:43:25   (  -0.03,-128.59) (  -0.97,-124.42)  475.01                80