Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 10 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)
 10/18/2021   18:52:07   (  -0.35,-128.22) (  -0.71,-126.40)  207.28                80
 10/19/2021   07:13:31   (   0.35,-128.24) (  -0.36,-131.59)  381.35                80
 10/21/2021   07:01:17   (   0.35,-128.28) (   0.28,-128.64)   40.12                80
 10/23/2021   06:46:23   (   0.35,-128.32) (   0.94,-125.68)  300.61                80
 10/23/2021   19:10:17   (  -0.34,-128.33) (   0.21,-130.83)  285.27                80
 10/25/2021   18:55:23   (  -0.34,-128.36) (  -0.45,-127.88)   54.74                80
 10/27/2021   18:45:48   (  -0.33,-128.38) (  -1.05,-124.91)  394.13                80
 10/28/2021   07:07:12   (   0.32,-128.39) (  -0.01,-130.11)  194.74                80
 10/30/2021   06:52:17   (   0.32,-128.41) (   0.60,-127.15)  144.12                80
 10/30/2021   19:16:12   (  -0.31,-128.41) (   0.49,-132.31)  442.40                80