Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2021   18:38:30   (   0.03, -75.20) (  -0.78, -78.69)  398.60                80
 04/10/2021   18:22:26   (   0.03, -75.20) (   0.27, -74.16)  118.54                80
 04/12/2021   06:44:12   (  -0.03, -75.21) (   0.94, -79.42)  480.46                80
 04/13/2021   06:22:48   (  -0.03, -75.22) (  -0.10, -74.89)   36.73                80
 04/15/2021   18:25:59   (   0.03, -75.24) (  -0.06, -75.66)   48.56                80
 04/16/2021   18:09:53   (   0.03, -75.25) (   0.93, -71.12)  469.17                80
 04/18/2021   06:31:40   (  -0.03, -75.26) (   0.22, -76.39)  128.93                80
 04/19/2021   06:10:15   (  -0.02, -75.27) (  -0.77, -71.86)  388.77                80
 04/20/2021   18:32:11   (   0.02, -75.29) (  -0.38, -77.16)  213.54                80
 04/21/2021   18:16:06   (   0.02, -75.30) (   0.61, -72.63)  304.73                80