Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2021   07:04:15   (  -0.04,-127.51) (  -0.28,-128.54)  117.12                80
 04/30/2021   06:49:22   (  -0.04,-127.42) (   0.35,-125.58)  209.42                80
 04/30/2021   19:10:36   (   0.03,-127.47) (   0.75,-130.74)  372.29                80
 05/02/2021   18:58:23   (   0.03,-127.38) (   0.12,-127.78)   46.17                80
 05/04/2021   18:48:50   (   0.03,-127.28) (  -0.52,-124.83)  279.86                80
 05/05/2021   07:10:13   (  -0.02,-127.20) (  -0.63,-130.01)  320.09                80
 05/07/2021   06:58:00   (  -0.02,-127.10) (   0.01,-127.06)    6.42                80
 05/09/2021   06:43:06   (  -0.03,-127.01) (   0.60,-124.09)  331.84                80
 05/09/2021   19:04:21   (   0.02,-127.04) (   0.50,-129.25)  251.34                80
 05/11/2021   18:54:47   (   0.02,-126.94) (  -0.09,-126.28)   74.16                80