Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/08/2021   06:16:35   (  -0.03, -75.19) (  -0.46, -73.40)  205.02                80
 04/09/2021   18:38:31   (   0.03, -75.20) (  -0.76, -78.69)  398.24                80
 04/10/2021   18:22:26   (   0.03, -75.20) (   0.29, -74.17)  119.09                80
 04/12/2021   06:44:13   (  -0.02, -75.22) (   0.93, -79.42)  479.78                80
 04/13/2021   06:22:48   (  -0.03, -75.22) (  -0.12, -74.90)   37.63                80
 04/15/2021   18:25:59   (   0.03, -75.25) (  -0.05, -75.67)   47.34                80
 04/16/2021   18:09:53   (   0.03, -75.26) (   0.95, -71.13)  470.59                80
 04/18/2021   06:31:41   (  -0.02, -75.28) (   0.21, -76.40)  127.35                80
 04/19/2021   06:10:15   (  -0.02, -75.29) (  -0.78, -71.86)  390.53                80
 04/20/2021   18:32:11   (   0.01, -75.31) (  -0.43, -77.16)  211.51                80
 04/21/2021   18:16:06   (   0.01, -75.32) (   0.63, -72.63)  306.94                80