Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 12 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)
 12/13/2021   07:16:08   (   0.03,-137.21) (   0.84,-133.40)  433.09                80
 12/13/2021   19:40:03   (  -0.02,-137.21) (   0.24,-138.56)  152.74                80
 12/15/2021   19:25:08   (  -0.03,-137.21) (  -0.38,-135.60)  183.29                80
 12/16/2021   07:49:11   (   0.02,-137.20) (  -0.75,-140.79)  407.64                80
 12/18/2021   07:36:56   (   0.02,-137.19) (  -0.13,-137.82)   72.64                80
 12/20/2021   07:22:01   (   0.02,-137.17) (   0.49,-134.86)  261.75                80
 12/20/2021   19:43:16   (  -0.02,-137.17) (   0.58,-140.02)  324.95                80
 12/22/2021   19:33:41   (  -0.02,-137.14) (  -0.04,-137.06)    8.83                80
 12/24/2021   19:21:26   (  -0.01,-137.11) (  -0.67,-134.10)  341.97                80
 12/25/2021   07:42:49   (   0.01,-137.10) (  -0.45,-139.29)  249.53                80