Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/13/2021   19:30:39   (   0.01,-137.25) (  -0.34,-135.59)  188.02                80
 01/14/2021   07:54:42   (  -0.01,-137.24) (  -0.77,-140.78)  403.20                80
 01/16/2021   07:42:30   (  -0.03,-137.24) (  -0.13,-137.83)   66.81                80
 01/18/2021   07:27:37   (  -0.03,-137.24) (   0.46,-134.86)  269.28                80
 01/18/2021   19:51:33   (   0.03,-137.24) (   0.59,-140.03)  316.17                80
 01/20/2021   19:36:40   (   0.02,-137.24) (   0.00,-137.07)   19.34                80
 01/22/2021   19:24:28   (   0.02,-137.22) (  -0.65,-134.11)  354.00                80
 01/23/2021   07:48:32   (  -0.02,-137.21) (  -0.45,-139.31)  237.84                80
 01/25/2021   07:36:20   (   0.01,-137.19) (   0.21,-136.35)   95.32                80
 01/25/2021   19:54:55   (  -0.01,-137.19) (   0.90,-141.51)  490.90                80