Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 2 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)
 02/20/2021   18:53:07   (   0.15,-128.08) (  -0.26,-126.29)  204.47                80
 02/21/2021   07:17:10   (  -0.16,-128.02) (  -0.90,-131.47)  392.06                80
 02/23/2021   07:04:58   (  -0.15,-128.07) (  -0.23,-128.52)   50.79                80
 02/25/2021   06:50:05   (  -0.15,-128.11) (   0.38,-125.56)  290.09                80
 02/25/2021   19:14:00   (   0.16,-128.19) (   0.72,-130.71)  287.28                80
 02/27/2021   18:59:08   (   0.16,-128.23) (   0.05,-127.76)   53.28                80
 03/01/2021   18:46:55   (   0.16,-128.27) (  -0.57,-124.80)  393.47                80
 03/02/2021   07:10:59   (  -0.16,-128.21) (  -0.52,-130.00)  203.27                80
 03/04/2021   06:56:06   (  -0.16,-128.23) (   0.10,-127.04)  136.05                80