Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2021   07:15:44   (   0.09,-128.48) (  -0.58,-131.55)  349.32                80
 06/15/2021   07:03:31   (   0.10,-128.46) (   0.05,-128.59)   15.22                80
 06/17/2021   06:48:38   (   0.10,-128.44) (   0.67,-125.63)  318.92                80
 06/17/2021   19:09:53   (  -0.10,-128.42) (   0.43,-130.79)  270.18                80
 06/19/2021   19:00:20   (  -0.10,-128.40) (  -0.21,-127.83)   63.59                80
 06/21/2021   18:48:07   (  -0.10,-128.37) (  -0.84,-124.88)  396.70                80
 06/22/2021   07:09:31   (   0.10,-128.39) (  -0.25,-130.07)  191.62                80
 06/24/2021   06:54:38   (   0.10,-128.35) (   0.39,-127.12)  140.27                80
 06/24/2021   19:15:52   (  -0.10,-128.31) (   0.77,-132.26)  450.85                80
 06/26/2021   06:42:24   (   0.11,-128.31) (   0.97,-124.15)  471.58                80
 06/26/2021   19:03:39   (  -0.10,-128.26) (   0.13,-129.31)  119.41                80