Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 7 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2021   18:33:02   (   0.07, -75.14) (  -0.40, -77.30)  245.54                80
 07/10/2021   18:16:57   (   0.07, -75.15) (   0.58, -72.76)  271.27                80
 07/12/2021   06:36:07   (  -0.08, -75.15) (   0.58, -78.04)  330.10                80
 07/13/2021   06:20:03   (  -0.07, -75.15) (  -0.46, -73.52)  186.94                80
 07/14/2021   18:39:20   (   0.08, -75.18) (  -0.73, -78.82)  415.51                80
 07/15/2021   18:23:17   (   0.08, -75.19) (   0.31, -74.30)  102.11                80
 07/17/2021   06:42:25   (  -0.09, -75.20) (   0.91, -79.56)  497.93                80
 07/18/2021   06:26:22   (  -0.09, -75.21) (  -0.13, -75.04)   19.65                80
 07/20/2021   18:26:56   (   0.10, -75.25) (  -0.01, -75.82)   64.80                80
 07/21/2021   18:10:51   (   0.10, -75.27) (   0.97, -71.29)  453.06                80