Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 7 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2021   07:03:16   (   0.10,-128.23) (   0.01,-128.58)   40.13                80
 07/03/2021   06:48:23   (   0.11,-128.19) (   0.66,-125.63)  291.08                80
 07/03/2021   19:09:37   (  -0.10,-128.15) (   0.43,-130.79)  299.19                80
 07/05/2021   19:00:03   (  -0.10,-128.10) (  -0.16,-127.82)   31.61                80
 07/07/2021   18:47:50   (  -0.10,-128.04) (  -0.76,-124.86)  361.70                80
 07/08/2021   07:09:13   (   0.09,-128.06) (  -0.32,-130.05)  226.60                80
 07/10/2021   06:54:19   (   0.10,-127.99) (   0.29,-127.09)  102.41                80
 07/10/2021   19:15:34   (  -0.08,-127.94) (   0.81,-132.25)  489.75                80
 07/12/2021   06:42:05   (   0.11,-127.92) (   0.90,-124.13)  430.95                80
 07/12/2021   19:03:20   (  -0.09,-127.87) (   0.20,-129.29)  161.13                80
 07/14/2021   18:53:46   (  -0.10,-127.79) (  -0.41,-126.32)  167.18                80