Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 7 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2021   06:20:03   (  -0.07, -75.16) (  -0.43, -73.51)  187.98                80
 07/14/2021   18:39:20   (   0.08, -75.17) (  -0.76, -78.82)  415.68                80
 07/15/2021   18:23:16   (   0.08, -75.18) (   0.27, -74.29)  101.28                80
 07/17/2021   06:42:26   (  -0.09, -75.19) (   0.88, -79.57)  499.36                80
 07/18/2021   06:23:41   (  -0.08, -75.19) (  -0.10, -75.03)   17.68                80
 07/20/2021   18:26:55   (   0.09, -75.22) (  -0.04, -75.82)   68.64                80
 07/21/2021   18:10:52   (   0.09, -75.22) (   1.00, -71.29)  448.59                80
 07/23/2021   06:30:00   (  -0.11, -75.24) (   0.21, -76.56)  151.44                80
 07/24/2021   06:13:56   (  -0.10, -75.25) (  -0.83, -72.04)  366.08                80
 07/25/2021   18:33:14   (   0.12, -75.27) (  -0.35, -77.34)  236.18                80
 07/26/2021   18:17:09   (   0.11, -75.29) (   0.64, -72.81)  282.19                80