Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 9 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)
 09/20/2021   07:45:01   (   0.04,-137.20) (  -0.39,-139.31)  239.69                80
 09/22/2021   07:30:07   (   0.04,-137.21) (   0.19,-136.35)   96.85                80
 09/22/2021   19:51:21   (  -0.04,-137.21) (   0.90,-141.51)  489.71                80
 09/24/2021   07:17:54   (   0.04,-137.21) (   0.84,-133.40)  432.79                80
 09/24/2021   19:39:09   (  -0.04,-137.20) (   0.25,-138.56)  153.88                80
 09/26/2021   19:29:36   (  -0.03,-137.19) (  -0.40,-135.60)  181.27                80
 09/27/2021   07:50:58   (   0.03,-137.19) (  -0.75,-140.79)  409.45                80
 09/29/2021   07:38:45   (   0.03,-137.17) (  -0.09,-137.84)   75.29                80
 10/01/2021   07:23:51   (   0.02,-137.15) (   0.51,-134.88)  258.30                80
 10/01/2021   19:45:06   (  -0.02,-137.14) (   0.59,-140.03)  329.12                80
 10/03/2021   19:35:32   (  -0.01,-137.11) (  -0.01,-137.07)    3.95                80