Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2021   06:44:04   (  -0.03, -75.20) (   0.93, -79.38)  477.21                80
 04/29/2021   06:22:40   (  -0.03, -75.20) (  -0.13, -74.86)   39.89                80
 05/01/2021   18:25:50   (   0.02, -75.21) (  -0.09, -75.61)   46.13                80
 05/02/2021   18:09:45   (   0.02, -75.22) (   0.97, -71.09)  471.72                80
 05/04/2021   06:31:31   (  -0.02, -75.25) (   0.23, -76.35)  125.56                80
 05/05/2021   06:10:06   (  -0.02, -75.26) (  -0.77, -71.81)  392.56                80
 05/06/2021   18:32:02   (   0.01, -75.28) (  -0.38, -77.12)  209.29                80
 05/07/2021   18:15:57   (   0.01, -75.30) (   0.62, -72.58)  309.63                80
 05/09/2021   06:37:44   (  -0.01, -75.34) (   0.52, -77.85)  285.80                80
 05/10/2021   06:16:19   (  -0.01, -75.36) (  -0.47, -73.31)  233.20                80