Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 11 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2017   07:14:47   (  -0.00, -89.28) (  -0.32, -87.79)  169.52                80
 11/21/2017   19:36:43   (  -0.00, -89.29) (  -0.85, -93.10)  433.95                80
 11/22/2017   19:20:39   (  -0.01, -89.29) (   0.18, -88.57)   82.52                80
 11/25/2017   07:23:41   (   0.01, -89.28) (   0.01, -89.31)    3.04                80
 11/27/2017   19:24:12   (  -0.01, -89.29) (  -0.20, -90.08)   89.26                80
 11/28/2017   19:08:07   (  -0.01, -89.30) (   0.84, -85.55)  427.59                80
 11/30/2017   07:29:54   (   0.02, -89.29) (   0.33, -90.82)  173.50                80
 12/01/2017   07:08:29   (   0.02, -89.30) (  -0.65, -86.28)  343.28                80
 12/02/2017   19:30:25   (  -0.02, -89.31) (  -0.51, -91.59)  259.61                80
 12/03/2017   19:14:20   (  -0.03, -89.31) (   0.47, -87.05)  257.33                80