Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2021   06:24:33   (  -0.04, -75.20) (  -0.03, -75.10)   11.09                80
 10/24/2021   18:30:29   (   0.03, -75.21) (  -0.11, -75.89)   77.17                80
 10/25/2021   18:09:05   (   0.04, -75.22) (   0.89, -71.36)  439.21                80
 10/27/2021   06:33:35   (  -0.03, -75.22) (   0.29, -76.64)  161.09                80
 10/28/2021   06:12:12   (  -0.03, -75.23) (  -0.71, -72.11)  355.31                80
 10/29/2021   18:36:50   (   0.03, -75.24) (  -0.48, -77.41)  248.08                80
 10/30/2021   18:15:28   (   0.03, -75.25) (   0.58, -72.90)  268.86                80
 11/01/2021   06:39:58   (  -0.02, -75.27) (   0.60, -78.17)  330.12                80
 11/02/2021   06:18:35   (  -0.03, -75.28) (  -0.40, -73.64)  187.05                80