Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/25/2018   07:25:42   (   0.11,-135.44) (   0.53,-133.50)  221.11                80
 04/25/2018   19:46:57   (  -0.11,-135.45) (   0.58,-138.66)  364.86                80
 04/27/2018   19:34:48   (  -0.11,-135.47) (  -0.08,-135.72)   27.20                80
 04/29/2018   19:19:59   (  -0.12,-135.49) (  -0.69,-132.76)  310.29                80
 04/30/2018   07:41:23   (   0.12,-135.50) (  -0.38,-137.96)  279.93                80
 05/02/2018   07:31:53   (   0.12,-135.51) (   0.23,-135.01)   56.76                80
 05/04/2018   07:19:43   (   0.13,-135.52) (   0.85,-132.06)  392.79                80
 05/04/2018   19:40:59   (  -0.13,-135.52) (   0.26,-137.22)  193.57                80
 05/06/2018   19:26:10   (  -0.13,-135.52) (  -0.43,-134.28)  141.80                80
 05/07/2018   07:47:34   (   0.13,-135.52) (  -0.70,-139.47)  449.04                80