Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2021   19:32:15   (   0.04,-137.17) (  -0.30,-135.59)  179.96                80
 04/20/2021   07:53:39   (  -0.04,-137.16) (  -0.80,-140.79)  411.63                80
 04/22/2021   07:41:26   (  -0.03,-137.14) (  -0.19,-137.83)   78.39                80
 04/24/2021   07:29:13   (  -0.03,-137.11) (   0.42,-134.87)  254.51                80
 04/24/2021   19:47:48   (   0.03,-137.11) (   0.62,-140.04)  332.42                80
 04/26/2021   19:38:16   (   0.03,-137.07) (   0.00,-137.08)    3.17                80
 04/28/2021   19:26:03   (   0.03,-137.03) (  -0.62,-134.12)  331.08                80
 04/29/2021   07:44:45   (  -0.03,-137.01) (  -0.54,-139.30)  261.19                80
 05/01/2021   07:35:12   (  -0.02,-136.96) (   0.09,-136.35)   68.98                80