Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 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)
 01/22/2018   18:32:53   (  -0.03, -75.21) (  -0.49, -77.25)  232.42                80
 01/23/2018   18:14:08   (  -0.03, -75.23) (   0.51, -72.71)  285.82                80
 01/25/2018   06:38:35   (   0.03, -75.23) (   0.65, -77.99)  314.01                80
 01/26/2018   06:17:09   (   0.03, -75.24) (  -0.36, -73.45)  204.26                80
 01/27/2018   18:39:05   (  -0.04, -75.29) (  -0.82, -78.75)  394.98                80
 01/28/2018   18:22:59   (  -0.04, -75.30) (   0.19, -74.22)  123.55                80
 01/30/2018   06:44:47   (   0.05, -75.31) (   0.96, -79.49)  475.56                80
 01/31/2018   06:23:21   (   0.05, -75.33) (  -0.04, -74.95)   43.14                80
 02/02/2018   18:29:11   (  -0.05, -75.40) (  -0.12, -75.72)   35.94                80
 02/03/2018   18:07:46   (  -0.05, -75.43) (   0.88, -71.18)  483.58                80