Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2021   19:39:20   (   0.00,-137.21) (   0.00,-137.07)   16.44                80
 01/22/2021   19:27:08   (   0.01,-137.21) (  -0.65,-134.11)  351.65                80
 01/23/2021   07:48:32   (  -0.01,-137.19) (  -0.45,-139.31)  240.10                80
 01/25/2021   07:33:39   (  -0.01,-137.18) (   0.14,-136.34)   94.41                80
 01/25/2021   19:54:55   (   0.01,-137.18) (   0.91,-141.51)  491.57                80
 01/27/2021   07:21:27   (  -0.01,-137.15) (   0.80,-133.39)  428.00                80
 01/27/2021   19:42:42   (   0.01,-137.15) (   0.31,-138.54)  158.11                80
 01/29/2021   19:33:09   (   0.01,-137.12) (  -0.29,-135.58)  174.68                80
 01/30/2021   07:54:33   (  -0.01,-137.10) (  -0.81,-140.77)  417.54                80
 02/01/2021   07:42:21   (  -0.01,-137.07) (  -0.14,-137.82)   85.44                80