Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2018   06:23:51   (   0.01, -75.15) (  -0.02, -75.04)   13.04                80
 12/19/2018   18:27:03   (  -0.02, -75.17) (  -0.13, -75.82)   73.16                80
 12/20/2018   18:10:58   (  -0.02, -75.18) (   0.84, -71.28)  444.14                80
 12/22/2018   06:32:45   (   0.02, -75.19) (   0.35, -76.55)  155.09                80
 12/23/2018   06:11:20   (   0.01, -75.20) (  -0.69, -72.02)  362.04                80
 12/24/2018   18:35:57   (  -0.01, -75.21) (  -0.49, -77.33)  241.22                80
 12/25/2018   18:14:32   (  -0.00, -75.22) (   0.55, -72.80)  276.20                80
 12/27/2018   06:38:59   (   0.00, -75.24) (   0.64, -78.07)  322.14                80
 12/28/2018   06:17:35   (  -0.00, -75.26) (  -0.39, -73.54)  195.67                80
 12/29/2018   18:42:11   (   0.00, -75.28) (  -0.77, -78.85)  406.15                80
 12/30/2018   18:20:46   (   0.00, -75.30) (   0.21, -74.31)  112.33                80