Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2019   06:45:13   (   0.01, -75.19) (   0.97, -79.58)  499.20                80
 01/02/2019   06:23:48   (   0.01, -75.20) (  -0.01, -75.04)   17.86                80
 01/04/2019   18:29:40   (  -0.01, -75.22) (  -0.12, -75.82)   67.89                80
 01/05/2019   18:08:14   (  -0.01, -75.23) (   0.86, -71.28)  449.54                80
 01/07/2019   06:32:42   (   0.01, -75.24) (   0.33, -76.55)  149.55                80
 01/08/2019   06:11:17   (   0.01, -75.26) (  -0.71, -72.02)  368.08                80
 01/09/2019   18:35:53   (  -0.01, -75.28) (  -0.45, -77.33)  233.48                80
 01/10/2019   18:14:28   (  -0.00, -75.30) (   0.53, -72.80)  284.66                80
 01/12/2019   06:38:56   (   0.01, -75.32) (   0.60, -78.08)  313.03                80
 01/13/2019   06:17:31   (   0.00, -75.34) (  -0.38, -73.54)  205.35                80