Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 7 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/15/2021   19:36:55   (  -0.01,-137.20) (  -0.04,-137.06)   16.63                80
 07/17/2021   19:24:41   (  -0.00,-137.21) (  -0.66,-134.09)  353.95                80
 07/18/2021   07:43:24   (   0.01,-137.21) (  -0.42,-139.29)  236.84                80
 07/20/2021   07:33:50   (  -0.00,-137.20) (   0.19,-136.33)   99.48                80
 07/20/2021   19:52:25   (   0.00,-137.20) (   0.89,-141.49)  486.75                80
 07/22/2021   07:21:36   (  -0.01,-137.19) (   0.82,-133.37)  434.98                80
 07/22/2021   19:40:11   (   0.01,-137.19) (   0.27,-138.53)  151.41                80
 07/24/2021   19:30:36   (   0.02,-137.18) (  -0.29,-135.55)  183.59                80
 07/25/2021   07:52:00   (  -0.02,-137.17) (  -0.79,-140.75)  407.60                80
 07/27/2021   07:39:46   (  -0.01,-137.15) (  -0.16,-137.79)   73.37                80