Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 5 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)
 05/18/2021   19:00:51   (  -0.04,-128.22) (  -0.12,-127.83)   45.25                80
 05/20/2021   18:48:38   (  -0.04,-128.27) (  -0.79,-124.88)  386.45                80
 05/21/2021   07:10:01   (   0.04,-128.27) (  -0.36,-130.06)  203.67                80
 05/23/2021   06:55:08   (   0.04,-128.31) (   0.30,-127.11)  136.90                80
 05/23/2021   19:16:23   (  -0.04,-128.32) (   0.79,-132.27)  448.61                80
 05/25/2021   06:42:54   (   0.03,-128.34) (   0.91,-124.14)  476.83                80
 05/25/2021   19:04:09   (  -0.04,-128.35) (   0.18,-129.30)  108.67                80
 05/27/2021   18:54:36   (  -0.04,-128.37) (  -0.49,-126.35)  230.35                80
 05/28/2021   07:15:59   (   0.05,-128.39) (  -0.65,-131.54)  358.80                80
 05/30/2021   07:03:46   (   0.05,-128.40) (   0.03,-128.59)   20.67                80