Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2021   06:38:00   (  -0.03, -75.19) (   0.56, -77.93)  311.63                80
 04/08/2021   06:16:35   (  -0.03, -75.19) (  -0.43, -73.39)  205.01                80
 04/09/2021   18:38:31   (   0.03, -75.20) (  -0.74, -78.70)  398.13                80
 04/10/2021   18:22:26   (   0.03, -75.21) (   0.25, -74.16)  119.22                80
 04/12/2021   06:44:13   (  -0.02, -75.22) (   0.90, -79.43)  479.59                80
 04/13/2021   06:22:48   (  -0.03, -75.22) (  -0.09, -74.89)   37.83                80
 04/15/2021   18:25:58   (   0.03, -75.25) (  -0.08, -75.66)   46.92                80
 04/16/2021   18:09:54   (   0.03, -75.26) (   0.97, -71.13)  471.03                80
 04/18/2021   06:31:40   (  -0.02, -75.28) (   0.24, -76.39)  126.88                80
 04/19/2021   06:10:16   (  -0.02, -75.29) (  -0.81, -71.87)  391.03                80
 04/20/2021   18:32:11   (   0.01, -75.31) (  -0.40, -77.16)  210.89                80