Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2021   19:37:27   (   0.03,-137.20) (  -0.01,-137.06)   15.77                80
 06/15/2021   19:25:14   (   0.03,-137.19) (  -0.64,-134.10)  350.62                80
 06/16/2021   07:43:58   (  -0.02,-137.18) (  -0.46,-139.30)  240.21                80
 06/18/2021   07:34:25   (  -0.02,-137.17) (   0.17,-136.34)   94.18                80
 06/18/2021   19:53:00   (   0.02,-137.16) (   0.93,-141.50)  493.00                80
 06/20/2021   07:22:12   (  -0.02,-137.15) (   0.81,-133.39)  427.98                80
 06/20/2021   19:40:47   (   0.02,-137.14) (   0.29,-138.54)  159.40                80
 06/22/2021   19:31:13   (   0.02,-137.11) (  -0.28,-135.58)  173.35                80
 06/23/2021   07:49:57   (  -0.02,-137.10) (  -0.81,-140.77)  418.02                80
 06/25/2021   07:37:44   (  -0.02,-137.06) (  -0.17,-137.82)   86.44                80