Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2021   07:15:29   (   0.10,-128.28) (  -0.59,-131.54)  371.51                80
 07/01/2021   07:03:16   (   0.10,-128.24) (   0.06,-128.59)   40.02                80
 07/03/2021   06:48:22   (   0.11,-128.19) (   0.65,-125.63)  291.44                80
 07/03/2021   19:09:37   (  -0.10,-128.15) (   0.45,-130.78)  298.87                80
 07/05/2021   19:00:03   (  -0.10,-128.10) (  -0.15,-127.82)   32.14                80
 07/07/2021   18:47:50   (  -0.10,-128.05) (  -0.81,-124.87)  362.46                80
 07/08/2021   07:09:13   (   0.09,-128.07) (  -0.33,-130.05)  225.67                80
 07/10/2021   06:54:19   (   0.10,-128.00) (   0.27,-127.09)  103.57                80
 07/10/2021   19:15:34   (  -0.09,-127.95) (   0.83,-132.25)  488.71                80
 07/12/2021   06:42:06   (   0.11,-127.94) (   0.94,-124.14)  432.30                80
 07/12/2021   19:03:20   (  -0.10,-127.88) (   0.22,-129.28)  159.91                80