Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2021   07:05:30   (   0.35,-128.20) (  -0.07,-130.10)  216.94                80
 09/12/2021   06:55:57   (   0.34,-128.15) (   0.56,-127.15)  114.38                80
 09/12/2021   19:14:32   (  -0.36,-128.09) (   0.53,-132.31)  479.92                80
 09/14/2021   06:43:44   (   0.33,-128.10) (   1.14,-124.18)  444.95                80
 09/14/2021   19:02:19   (  -0.35,-128.03) (  -0.10,-129.35)  149.49                80
 09/16/2021   18:52:45   (  -0.35,-127.98) (  -0.68,-126.39)  180.47                80
 09/17/2021   07:11:29   (   0.36,-128.02) (  -0.41,-131.58)  405.92                80
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.23,-128.63)   75.99                80
 09/21/2021   06:49:42   (   0.36,-127.90) (   0.81,-125.66)  253.94                80
 09/21/2021   19:08:17   (  -0.37,-127.83) (   0.29,-130.82)  340.74                80
 09/23/2021   18:56:04   (  -0.37,-127.77) (  -0.36,-127.87)   11.12                80