Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 7 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/08/2021   19:30:56   (   0.01,-137.18) (  -0.30,-135.57)  182.19                80
 07/09/2021   07:49:40   (  -0.01,-137.18) (  -0.78,-140.77)  408.09                80
 07/11/2021   07:37:26   (  -0.01,-137.18) (  -0.17,-137.81)   72.15                80
 07/13/2021   07:27:53   (  -0.01,-137.17) (   0.50,-134.86)  263.30                80
 07/13/2021   19:46:28   (   0.00,-137.17) (   0.60,-140.01)  323.72                80
 07/15/2021   19:36:54   (  -0.00,-137.15) (  -0.02,-137.05)   11.08                80
 07/17/2021   19:24:40   (   0.00,-137.13) (  -0.63,-134.09)  345.39                80
 07/18/2021   07:43:24   (   0.00,-137.13) (  -0.44,-139.29)  245.47                80
 07/20/2021   07:33:50   (  -0.01,-137.10) (   0.18,-136.33)   87.99                80
 07/20/2021   19:52:24   (   0.01,-137.08) (   0.98,-141.47)  499.63                80