Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/07/2021   18:59:00   (  -0.33,-128.18) (  -0.41,-127.87)   36.16                80
 09/09/2021   18:46:47   (  -0.33,-128.16) (  -1.04,-124.91)  369.88                80
 09/10/2021   07:05:31   (   0.35,-128.20) (  -0.06,-130.10)  216.32                80
 09/12/2021   06:55:58   (   0.34,-128.17) (   0.57,-127.15)  116.52                80
 09/12/2021   19:14:32   (  -0.36,-128.11) (   0.53,-132.31)  477.15                80
 09/14/2021   06:43:44   (   0.33,-128.14) (   1.14,-124.18)  448.59                80
 09/14/2021   19:02:19   (  -0.35,-128.07) (  -0.10,-129.35)  145.22                80
 09/16/2021   18:52:45   (  -0.35,-128.03) (  -0.68,-126.39)  186.24                80
 09/17/2021   07:11:29   (   0.36,-128.07) (  -0.41,-131.58)  400.02                80
 09/19/2021   06:59:16   (   0.36,-128.03) (   0.23,-128.63)   68.58                80