Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 9 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2021   07:26:33   (   0.04,-137.21) (   0.55,-134.87)  265.38                64
 09/15/2021   19:45:23   (  -0.04,-137.20) (   0.55,-140.03)  321.61                80
 09/17/2021   19:35:50   (  -0.04,-137.20) (  -0.09,-137.08)   14.86                80
 09/19/2021   19:23:36   (  -0.03,-137.20) (  -0.67,-134.11)  350.52                80
 09/20/2021   07:45:00   (   0.03,-137.20) (  -0.42,-139.31)  239.41                80
 09/22/2021   07:30:07   (   0.03,-137.20) (   0.23,-136.36)   96.34                80
 09/22/2021   19:51:22   (  -0.03,-137.19) (   0.87,-141.51)  490.94                80
 09/24/2021   07:17:53   (   0.03,-137.19) (   0.82,-133.39)  431.55                80
 09/24/2021   19:39:08   (  -0.03,-137.18) (   0.28,-138.55)  155.90                80
 09/26/2021   19:29:35   (  -0.03,-137.17) (  -0.37,-135.60)  178.49                80
 09/27/2021   07:50:59   (   0.03,-137.17) (  -0.71,-140.80)  411.81                80