Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2021   19:36:41   (   0.02,-137.22) (  -0.03,-137.07)   17.42                80
 01/22/2021   19:24:28   (   0.01,-137.20) (  -0.62,-134.11)  351.36                80
 01/23/2021   07:48:32   (  -0.00,-137.19) (  -0.48,-139.30)  240.89                80
 01/25/2021   07:36:20   (   0.01,-137.16) (   0.17,-136.35)   91.91                80
 01/25/2021   19:54:54   (  -0.01,-137.16) (   0.94,-141.50)  494.27                80
 01/27/2021   07:24:08   (   0.01,-137.12) (   0.83,-133.40)  424.45                80
 01/27/2021   19:42:42   (  -0.01,-137.12) (   0.28,-138.55)  161.94                80
 01/29/2021   19:33:10   (  -0.00,-137.08) (  -0.32,-135.59)  169.72                80
 01/30/2021   07:51:53   (   0.00,-137.06) (  -0.78,-140.78)  422.98                80
 02/01/2021   07:39:40   (   0.00,-137.01) (  -0.18,-137.82)   91.93                80