Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 5 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/14/2021   07:04:03   (   0.01,-128.10) (  -0.06,-128.58)   54.02                80
 05/16/2021   06:49:09   (   0.01,-128.15) (   0.54,-125.62)  287.67                80
 05/16/2021   19:10:24   (  -0.02,-128.17) (   0.55,-130.78)  296.27                80
 05/18/2021   19:00:51   (  -0.03,-128.22) (  -0.11,-127.82)   44.87                80
 05/20/2021   18:48:38   (  -0.03,-128.26) (  -0.77,-124.87)  385.82                80
 05/21/2021   07:10:01   (   0.03,-128.27) (  -0.37,-130.06)  204.14                80
 05/23/2021   06:55:08   (   0.03,-128.30) (   0.30,-127.11)  136.21                80
 05/23/2021   19:16:23   (  -0.03,-128.31) (   0.79,-132.26)  449.64                80
 05/25/2021   06:42:54   (   0.02,-128.33) (   0.92,-124.14)  475.93                80
 05/25/2021   19:04:09   (  -0.03,-128.33) (   0.17,-129.30)  109.87                80