Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2021   06:26:09   (  -0.05, -75.14) (  -0.10, -75.00)   15.89                80
 07/04/2021   18:26:43   (   0.06, -75.15) (  -0.06, -75.78)   71.15                80
 07/05/2021   18:10:39   (   0.06, -75.16) (   0.92, -71.25)  445.92                80
 07/07/2021   06:29:48   (  -0.07, -75.17) (   0.24, -76.52)  154.60                80
 07/08/2021   06:13:45   (  -0.07, -75.18) (  -0.79, -72.00)  362.41                80
 07/09/2021   18:33:02   (   0.08, -75.19) (  -0.40, -77.30)  240.93                80
 07/10/2021   18:16:58   (   0.08, -75.20) (   0.64, -72.78)  276.53                80
 07/12/2021   06:36:08   (  -0.09, -75.22) (   0.53, -78.06)  322.87                80
 07/13/2021   06:20:03   (  -0.09, -75.23) (  -0.45, -73.52)  194.78                80