Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2018   18:26:42   (  -0.03, -75.23) (  -0.12, -75.76)   59.50                80
 01/18/2018   18:07:57   (  -0.03, -75.24) (   0.88, -71.22)  457.94                80
 01/20/2018   06:32:23   (   0.03, -75.22) (   0.34, -76.48)  144.35                80
 01/21/2018   06:10:59   (   0.03, -75.23) (  -0.72, -71.96)  373.30                80
 01/22/2018   18:35:34   (  -0.04, -75.28) (  -0.45, -77.26)  225.45                80
 01/23/2018   18:14:08   (  -0.03, -75.29) (   0.55, -72.72)  292.54                80
 01/25/2018   06:38:35   (   0.04, -75.28) (   0.67, -77.98)  308.84                80
 01/26/2018   06:17:10   (   0.04, -75.29) (  -0.39, -73.46)  209.21                80
 01/27/2018   18:41:44   (  -0.05, -75.34) (  -0.84, -78.75)  389.17                80
 01/28/2018   18:20:20   (  -0.05, -75.35) (   0.22, -74.23)  129.12                80
 01/30/2018   06:44:46   (   0.06, -75.35) (   0.99, -79.48)  471.58                80