Simultaneous Nadir Overpasses (SNOs) between GOES-16 and TERRA
TLE Epoch: 2021 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2021   15:19:48   (   0.09, -75.21) (  -0.23, -73.76)  164.88                80
 09/19/2021   03:43:51   (  -0.10, -75.19) (  -0.92, -78.94)  426.87                80
 09/21/2021   03:31:38   (  -0.10, -75.20) (  -0.28, -75.99)   90.37                80
 09/23/2021   03:16:45   (  -0.10, -75.21) (   0.37, -73.04)  246.89                80
 09/23/2021   15:40:40   (   0.11, -75.23) (   0.72, -78.20)  337.69                80
 09/25/2021   15:28:26   (   0.11, -75.24) (   0.13, -75.23)    2.95                80
 09/27/2021   15:13:33   (   0.11, -75.26) (  -0.52, -72.28)  338.55                80
 09/28/2021   03:37:37   (  -0.12, -75.25) (  -0.57, -77.48)  252.35                80
 09/30/2021   03:22:43   (  -0.13, -75.28) (   0.03, -74.52)   86.33                80
 09/30/2021   15:46:38   (   0.13, -75.29) (   1.07, -79.67)  498.23                80