Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 4 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2021   19:26:02   (   0.05,-137.20) (  -0.61,-134.12)  351.27                80
 04/29/2021   07:47:26   (  -0.05,-137.19) (  -0.48,-139.31)  240.92                80
 05/01/2021   07:32:33   (  -0.04,-137.17) (   0.15,-136.36)   93.62                80
 05/01/2021   19:53:48   (   0.04,-137.18) (   0.95,-141.51)  491.99                80
 05/03/2021   07:20:20   (  -0.04,-137.16) (   0.78,-133.40)  427.66                80
 05/03/2021   19:41:35   (   0.03,-137.16) (   0.31,-138.56)  157.97                80
 05/05/2021   19:32:02   (   0.03,-137.14) (  -0.33,-135.60)  176.06                80
 05/06/2021   07:53:25   (  -0.03,-137.13) (  -0.83,-140.78)  416.26                80
 05/08/2021   07:41:12   (  -0.03,-137.11) (  -0.18,-137.83)   82.42                80
 05/10/2021   07:26:19   (  -0.02,-137.08) (   0.47,-134.88)  251.00                80
 05/10/2021   19:47:34   (   0.02,-137.08) (   0.63,-140.03)  335.12                80