Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2021   18:50:34   (   0.02,-128.15) (  -0.39,-126.32)  208.63                80
 08/16/2021   07:14:36   (  -0.06,-128.24) (  -0.76,-131.50)  370.95                80
 08/18/2021   07:02:24   (  -0.05,-128.26) (  -0.10,-128.55)   32.58                80
 08/20/2021   06:47:30   (  -0.04,-128.28) (   0.50,-125.59)  305.30                80
 08/20/2021   19:11:24   (   0.08,-128.19) (   0.59,-130.74)  289.65                80
 08/22/2021   18:56:30   (   0.06,-128.21) (  -0.01,-127.78)   48.29                80
 08/24/2021   18:44:18   (   0.06,-128.22) (  -0.68,-124.83)  386.25                80
 08/25/2021   07:08:20   (  -0.09,-128.32) (  -0.47,-130.01)  192.96                80
 08/27/2021   06:53:27   (  -0.08,-128.33) (   0.20,-127.06)  144.66                80
 08/27/2021   19:17:21   (   0.11,-128.24) (   0.95,-132.21)  450.95                80