Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2017   07:29:13   (   0.01, -89.48) (   0.28, -90.65)  132.85                80
 06/24/2017   07:07:48   (   0.01, -89.48) (  -0.76, -86.12)  383.18                80
 06/25/2017   19:29:44   (  -0.01, -89.47) (  -0.44, -91.42)  222.31                80
 06/26/2017   19:13:40   (  -0.00, -89.47) (   0.60, -86.89)  294.01                80
 06/28/2017   07:35:27   (   0.00, -89.47) (   0.58, -92.16)  305.75                80
 06/29/2017   07:14:02   (   0.00, -89.47) (  -0.40, -87.62)  210.98                80
 06/30/2017   19:35:58   (  -0.00, -89.47) (  -0.79, -92.92)  393.35                80
 07/01/2017   19:19:54   (  -0.00, -89.48) (   0.24, -88.39)  123.74                80
 07/03/2017   07:41:41   (   0.00, -89.49) (   0.93, -93.66)  474.87                80
 07/04/2017   07:20:16   (   0.00, -89.50) (  -0.10, -89.13)   42.48                80
 07/06/2017   19:23:27   (  -0.00, -89.51) (  -0.10, -89.89)   43.85                80