Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 11.  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   06:44:12   (  -0.04, -75.21) (   0.93, -79.42)  480.94                80
 04/13/2021   06:22:48   (  -0.04, -75.21) (  -0.12, -74.90)   36.05                80
 04/15/2021   18:25:59   (   0.04, -75.22) (  -0.05, -75.66)   49.97                80
 04/16/2021   18:09:53   (   0.04, -75.23) (   0.94, -71.13)  467.53                80
 04/18/2021   06:31:41   (  -0.03, -75.25) (   0.22, -76.40)  130.72                80
 04/19/2021   06:10:15   (  -0.03, -75.25) (  -0.77, -71.86)  386.77                80
 04/20/2021   18:32:12   (   0.02, -75.27) (  -0.38, -77.16)  216.04                80
 04/21/2021   18:16:06   (   0.02, -75.28) (   0.61, -72.63)  302.00                80
 04/23/2021   06:37:53   (  -0.01, -75.30) (   0.55, -77.90)  295.03                80
 04/24/2021   06:16:28   (  -0.02, -75.32) (  -0.44, -73.36)  223.09                80