Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2021   18:48:08   (  -0.10,-128.39) (  -0.87,-124.88)  399.39                80
 06/22/2021   07:09:30   (   0.10,-128.40) (  -0.28,-130.07)  189.69                80
 06/24/2021   06:54:38   (   0.10,-128.37) (   0.35,-127.11)  142.91                80
 06/24/2021   19:15:52   (  -0.09,-128.34) (   0.74,-132.27)  447.05                80
 06/26/2021   06:42:25   (   0.11,-128.33) (   1.00,-124.16)  474.95                80
 06/26/2021   19:03:39   (  -0.10,-128.30) (   0.10,-129.31)  114.87                80
 06/28/2021   18:54:06   (  -0.11,-128.27) (  -0.54,-126.36)  217.26                80
 06/29/2021   07:15:29   (   0.10,-128.29) (  -0.61,-131.54)  370.49                80
 07/01/2021   07:03:16   (   0.11,-128.25) (   0.04,-128.59)   38.43                80
 07/03/2021   06:48:22   (   0.11,-128.21) (   0.63,-125.63)  293.42                80
 07/03/2021   19:09:37   (  -0.11,-128.16) (   0.47,-130.78)  298.02                80