Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/15/2021   19:25:14   (   0.03,-137.19) (  -0.63,-134.10)  350.97                80
 06/16/2021   07:43:58   (  -0.02,-137.19) (  -0.46,-139.30)  239.80                80
 06/18/2021   07:34:25   (  -0.02,-137.17) (   0.17,-136.34)   94.78                80
 06/18/2021   19:53:00   (   0.02,-137.17) (   0.93,-141.50)  492.33                80
 06/20/2021   07:22:12   (  -0.02,-137.15) (   0.80,-133.39)  428.81                80
 06/20/2021   19:40:47   (   0.02,-137.15) (   0.30,-138.54)  158.50                80
 06/22/2021   19:31:13   (   0.02,-137.12) (  -0.28,-135.58)  174.47                80
 06/23/2021   07:49:57   (  -0.02,-137.11) (  -0.81,-140.77)  416.86                80
 06/25/2021   07:37:44   (  -0.02,-137.07) (  -0.17,-137.82)   85.05                80
 06/27/2021   07:28:11   (  -0.01,-137.02) (   0.47,-134.86)  246.31                80
 06/27/2021   19:46:45   (   0.01,-137.01) (   0.63,-140.02)  341.62                80