Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 03/20/2021   06:55:58   (  -0.15,-128.37) (   0.12,-127.06)  149.13                80
 03/20/2021   19:17:14   (   0.15,-128.44) (   0.92,-132.23)  429.29                80
 03/22/2021   06:43:45   (  -0.14,-128.36) (   0.75,-124.10)  484.29                80
 03/22/2021   19:05:01   (   0.14,-128.44) (   0.30,-129.27)   94.21                80
 03/24/2021   18:55:28   (   0.14,-128.42) (  -0.33,-126.31)  240.42                80
 03/25/2021   07:16:50   (  -0.13,-128.34) (  -0.82,-131.49)  358.32                80
 03/27/2021   07:04:37   (  -0.13,-128.32) (  -0.18,-128.54)   24.16                80
 03/29/2021   06:49:45   (  -0.14,-128.30) (   0.46,-125.58)  309.68                80
 03/29/2021   19:10:59   (   0.13,-128.36) (   0.65,-130.74)  270.03                80
 03/31/2021   19:01:26   (   0.13,-128.33) (   0.01,-127.78)   63.07                80