Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/12/2021   06:44:13   (  -0.04, -75.21) (   0.92, -79.42)  480.84                80
 04/13/2021   06:22:48   (  -0.04, -75.21) (  -0.13, -74.90)   36.22                80
 04/15/2021   18:25:59   (   0.04, -75.22) (  -0.04, -75.67)   49.97                80
 04/16/2021   18:09:54   (   0.04, -75.23) (   0.95, -71.13)  467.58                80
 04/18/2021   06:31:41   (  -0.03, -75.25) (   0.20, -76.40)  130.57                80
 04/19/2021   06:10:15   (  -0.03, -75.26) (  -0.79, -71.86)  386.94                80
 04/20/2021   18:32:12   (   0.02, -75.27) (  -0.37, -77.17)  215.95                80
 04/21/2021   18:16:06   (   0.02, -75.28) (   0.62, -72.63)  302.11                80
 04/23/2021   06:37:53   (  -0.02, -75.31) (   0.59, -77.89)  294.82                80
 04/24/2021   06:16:28   (  -0.02, -75.32) (  -0.46, -73.36)  223.33                80
 04/25/2021   18:38:23   (   0.01, -75.34) (  -0.75, -78.66)  378.94                80