Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 5 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/11/2021   18:54:52   (  -0.00,-128.05) (  -0.34,-126.33)  194.59                80
 05/12/2021   07:16:15   (   0.01,-128.05) (  -0.75,-131.53)  396.26                80
 05/14/2021   07:04:02   (   0.01,-128.10) (  -0.10,-128.57)   53.84                80
 05/16/2021   06:49:09   (   0.01,-128.15) (   0.55,-125.62)  287.83                80
 05/16/2021   19:10:24   (  -0.01,-128.18) (   0.54,-130.78)  295.96                80
 05/18/2021   19:00:51   (  -0.02,-128.22) (  -0.11,-127.83)   45.23                80
 05/20/2021   18:48:37   (  -0.02,-128.26) (  -0.71,-124.86)  386.18                80
 05/21/2021   07:10:01   (   0.02,-128.27) (  -0.37,-130.06)  203.88                80
 05/23/2021   06:55:08   (   0.02,-128.30) (   0.29,-127.11)  136.47                80
 05/23/2021   19:16:23   (  -0.02,-128.31) (   0.80,-132.26)  449.27                80