Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 10.  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) (  -0.54,-126.36)  239.64                80
 06/13/2021   07:15:45   (   0.09,-128.48) (  -0.56,-131.55)  349.46                80
 06/15/2021   07:03:32   (   0.10,-128.46) (   0.07,-128.59)   15.26                80
 06/17/2021   06:48:39   (   0.10,-128.44) (   0.69,-125.64)  318.57                80
 06/17/2021   19:09:54   (  -0.10,-128.42) (   0.41,-130.79)  270.60                80
 06/19/2021   19:00:21   (  -0.10,-128.39) (  -0.22,-127.84)   63.02                80
 06/21/2021   18:48:08   (  -0.10,-128.36) (  -0.86,-124.88)  396.06                80
 06/22/2021   07:09:31   (   0.10,-128.38) (  -0.23,-130.08)  192.26                80
 06/24/2021   06:54:38   (   0.10,-128.34) (   0.35,-127.11)  139.54                80
 06/24/2021   19:15:52   (  -0.10,-128.30) (   0.76,-132.27)  451.65                80