Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 12 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2017   06:45:06   (   0.01, -75.17) (   1.00, -79.54)  498.44                80
 12/30/2017   06:26:20   (   0.02, -75.17) (   0.01, -75.01)   18.10                80
 01/01/2018   18:29:31   (  -0.03, -75.19) (  -0.15, -75.78)   67.38                80
 01/02/2018   18:08:06   (  -0.03, -75.19) (   0.85, -71.25)  449.14                80
 01/04/2018   06:32:33   (   0.03, -75.16) (   0.32, -76.52)  153.90                80
 01/05/2018   06:11:08   (   0.03, -75.17) (  -0.68, -71.98)  363.03                80
 01/06/2018   18:35:43   (  -0.04, -75.20) (  -0.51, -77.28)  237.14                80
 01/07/2018   18:14:17   (  -0.03, -75.21) (   0.49, -72.74)  280.36                80
 01/09/2018   06:38:45   (   0.04, -75.20) (   0.68, -78.01)  321.11                80
 01/10/2018   06:17:20   (   0.04, -75.21) (  -0.38, -73.49)  196.79                80
 01/11/2018   18:41:55   (  -0.05, -75.26) (  -0.86, -78.78)  402.08                80