Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2021   18:42:50   (   0.05, -75.19) (  -0.75, -78.89)  420.65                80
 10/19/2021   18:21:26   (   0.05, -75.20) (   0.24, -74.36)   95.30                80
 10/22/2021   06:24:33   (  -0.05, -75.20) (  -0.06, -75.11)   10.70                80
 10/24/2021   18:30:28   (   0.04, -75.21) (  -0.14, -75.88)   77.31                80
 10/25/2021   18:09:06   (   0.04, -75.22) (   0.91, -71.37)  439.13                80
 10/27/2021   06:33:36   (  -0.03, -75.23) (   0.26, -76.64)  160.80                80
 10/28/2021   06:12:12   (  -0.04, -75.23) (  -0.73, -72.11)  355.66                80
 10/29/2021   18:36:51   (   0.03, -75.25) (  -0.45, -77.42)  247.84                80
 10/30/2021   18:15:27   (   0.04, -75.26) (   0.55, -72.89)  269.12                80