Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2018   21:59:08   (  -0.02,-128.52) (   0.04,-128.18)   38.28                80
 12/11/2018   09:59:32   (   0.01,-128.65) (   0.06,-128.94)   32.69                80
 12/12/2018   09:43:26   (   0.02,-128.65) (  -0.91,-124.40)  484.39                80
 12/13/2018   22:02:42   (   0.01,-128.55) (  -0.28,-129.70)  131.84                80
 12/14/2018   21:46:38   (  -0.00,-128.56) (   0.75,-125.18)  385.35                80
 12/16/2018   10:05:46   (  -0.02,-128.67) (   0.38,-130.46)  203.21                80
 12/17/2018   09:49:41   (  -0.01,-128.67) (  -0.59,-125.92)  313.44                80
 12/18/2018   22:08:57   (   0.02,-128.56) (  -0.59,-131.22)  304.11                80
 12/19/2018   21:52:53   (   0.01,-128.56) (   0.44,-126.70)  212.38                80
 12/21/2018   10:12:01   (  -0.03,-128.67) (   0.69,-131.98)  376.94                80
 12/22/2018   09:55:56   (  -0.02,-128.66) (  -0.28,-127.44)  138.78                80