Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2018   18:26:33   (   0.00, -75.19) (  -0.08, -75.70)   58.17                80
 05/26/2018   18:10:28   (   0.00, -75.19) (   0.88, -71.16)  458.74                80
 05/28/2018   06:32:16   (  -0.00, -75.20) (   0.27, -76.43)  140.40                80
 05/29/2018   06:10:51   (   0.00, -75.21) (  -0.75, -71.90)  376.65                80
 05/30/2018   18:32:48   (  -0.00, -75.21) (  -0.43, -77.21)  227.01                80
 05/31/2018   18:16:42   (  -0.01, -75.22) (   0.54, -72.67)  290.54                80
 06/02/2018   06:38:31   (   0.01, -75.24) (   0.61, -77.94)  307.45                80
 06/03/2018   06:17:06   (   0.02, -75.25) (  -0.41, -73.41)  210.25                80
 06/04/2018   18:39:01   (  -0.02, -75.26) (  -0.82, -78.70)  392.63                80
 06/05/2018   18:22:57   (  -0.02, -75.28) (   0.21, -74.17)  125.53                80