Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/12/2021   18:54:21   (  -0.09,-128.46) (  -0.52,-126.35)  239.75                80
 06/13/2021   07:15:44   (   0.09,-128.48) (  -0.58,-131.55)  349.36                80
 06/15/2021   07:03:31   (   0.10,-128.46) (   0.04,-128.59)   15.35                80
 06/17/2021   06:48:38   (   0.10,-128.44) (   0.67,-125.63)  318.77                80
 06/17/2021   19:09:53   (  -0.10,-128.42) (   0.43,-130.79)  270.39                80
 06/19/2021   19:00:20   (  -0.10,-128.40) (  -0.20,-127.83)   63.33                80
 06/21/2021   18:48:07   (  -0.10,-128.37) (  -0.84,-124.88)  396.37                80
 06/22/2021   07:09:31   (   0.10,-128.39) (  -0.25,-130.07)  191.93                80
 06/24/2021   06:54:38   (   0.10,-128.35) (   0.39,-127.12)  139.91                80
 06/24/2021   19:15:53   (  -0.10,-128.30) (   0.72,-132.28)  451.27                80