Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 4 27.  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   (   0.04,-137.21) (  -0.59,-134.11)  351.33                80
 04/29/2021   07:47:26   (  -0.04,-137.19) (  -0.51,-139.31)  240.65                80
 05/01/2021   07:32:33   (  -0.04,-137.18) (   0.12,-136.35)   94.16                80
 05/01/2021   19:53:47   (   0.03,-137.19) (   0.98,-141.51)  491.52                80
 05/03/2021   07:20:20   (  -0.03,-137.17) (   0.76,-133.39)  428.47                80
 05/03/2021   19:41:34   (   0.03,-137.17) (   0.34,-138.55)  157.25                80
 05/05/2021   19:32:02   (   0.02,-137.16) (  -0.30,-135.60)  177.04                80
 05/06/2021   07:53:25   (  -0.02,-137.14) (  -0.79,-140.79)  415.03                80
 05/08/2021   07:41:12   (  -0.02,-137.12) (  -0.15,-137.84)   80.97                80
 05/10/2021   07:26:18   (  -0.02,-137.10) (   0.44,-134.87)  252.73                80
 05/10/2021   19:47:33   (   0.02,-137.10) (   0.66,-140.03)  333.44                80