Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 2 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/22/2018   06:10:35   (  -0.01, -75.19) (  -0.76, -71.87)  377.84                80
 02/23/2018   18:32:30   (   0.01, -75.21) (  -0.42, -77.18)  224.27                80
 02/24/2018   18:16:25   (   0.01, -75.22) (   0.59, -72.64)  293.56                80
 02/26/2018   06:38:11   (  -0.02, -75.23) (   0.59, -77.90)  305.00                80
 02/27/2018   06:16:46   (  -0.02, -75.24) (  -0.43, -73.37)  212.96                80
 02/28/2018   18:38:41   (   0.02, -75.26) (  -0.75, -78.67)  388.54                80
 03/01/2018   18:22:35   (   0.02, -75.28) (   0.26, -74.14)  130.19                80
 03/03/2018   06:44:22   (  -0.02, -75.31) (   0.91, -79.40)  466.46                80
 03/04/2018   06:22:56   (  -0.02, -75.33) (  -0.10, -74.87)   52.66                80
 03/06/2018   18:26:06   (   0.03, -75.39) (  -0.05, -75.63)   28.15                80
 03/07/2018   18:10:01   (   0.03, -75.42) (   0.96, -71.10)  491.69                80