Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/22/2021   18:27:29   (   0.12, -75.20) (  -0.04, -75.87)   77.39                80
 09/23/2021   18:11:24   (   0.12, -75.20) (   0.96, -71.34)  439.08                80
 09/25/2021   06:33:12   (  -0.12, -75.20) (   0.21, -76.61)  160.95                80
 09/26/2021   06:11:48   (  -0.12, -75.20) (  -0.80, -72.08)  355.53                80
 09/27/2021   18:36:25   (   0.12, -75.21) (  -0.36, -77.39)  248.58                80
 09/28/2021   18:15:01   (   0.13, -75.21) (   0.64, -72.85)  268.19                80
 09/30/2021   06:39:29   (  -0.12, -75.22) (   0.53, -78.12)  331.05                80
 10/01/2021   06:18:05   (  -0.13, -75.23) (  -0.47, -73.59)  185.81                80
 10/02/2021   18:42:42   (   0.13, -75.23) (  -0.68, -78.90)  417.62                80
 10/03/2021   18:21:17   (   0.13, -75.24) (   0.33, -74.37)   99.78                80