Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2021   19:24:59   (   0.01,-137.19) (  -0.63,-134.10)  350.59                80
 07/02/2021   07:43:42   (  -0.00,-137.18) (  -0.46,-139.30)  240.83                80
 07/04/2021   07:34:09   (  -0.01,-137.17) (   0.19,-136.34)   94.48                80
 07/04/2021   19:52:44   (   0.01,-137.17) (   0.90,-141.50)  491.75                80
 07/06/2021   07:21:56   (  -0.02,-137.15) (   0.79,-133.38)  429.03                80
 07/06/2021   19:40:30   (   0.01,-137.15) (   0.30,-138.54)  157.33                80
 07/08/2021   19:30:56   (   0.02,-137.13) (  -0.30,-135.57)  176.23                80
 07/09/2021   07:52:20   (  -0.02,-137.11) (  -0.79,-140.77)  415.62                80
 07/11/2021   07:40:06   (  -0.01,-137.08) (  -0.18,-137.81)   83.20                80
 07/13/2021   07:25:12   (  -0.01,-137.04) (   0.43,-134.84)  248.76                80
 07/13/2021   19:46:27   (   0.01,-137.03) (   0.67,-140.00)  338.35                80