Simultaneous Nadir Overpasses (SNOs) between GOES-16 and TERRA
TLE Epoch: 2017 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2017   15:17:58   (   0.01, -75.19) (  -0.62, -72.30)  328.56                80
 12/22/2017   03:39:22   (  -0.01, -75.18) (  -0.50, -77.49)  262.71                80
 12/24/2017   03:29:51   (  -0.02, -75.18) (   0.11, -74.53)   73.70                80
 12/26/2017   03:17:40   (  -0.03, -75.18) (   0.73, -71.57)  410.49                80
 12/26/2017   15:38:56   (   0.03, -75.19) (   0.35, -76.73)  174.47                80
 12/28/2017   15:24:05   (   0.03, -75.20) (  -0.28, -73.77)  162.53                80
 12/29/2017   03:45:29   (  -0.03, -75.19) (  -0.84, -78.96)  429.11                80
 12/30/2017   15:11:54   (   0.03, -75.21) (  -0.90, -70.82)  499.61                80
 12/31/2017   03:33:18   (  -0.02, -75.20) (  -0.21, -76.01)   91.93                80
 01/02/2018   03:23:47   (  -0.02, -75.21) (   0.42, -73.05)  245.67                80
 01/02/2018   15:45:03   (   0.02, -75.23) (   0.66, -78.21)  338.47                80