Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 25.  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)  221.07                80
 04/25/2018   19:46:57   (  -0.11,-135.45) (   0.58,-138.66)  364.67                80
 04/27/2018   19:34:48   (  -0.11,-135.47) (  -0.08,-135.71)   27.07                80
 04/29/2018   19:19:59   (  -0.12,-135.49) (  -0.68,-132.76)  310.24                80
 04/30/2018   07:41:23   (   0.12,-135.49) (  -0.40,-137.96)  280.27                80
 05/02/2018   07:31:53   (   0.12,-135.50) (   0.20,-135.00)   56.32                80
 05/04/2018   07:19:44   (   0.13,-135.51) (   0.86,-132.06)  392.07                80
 05/04/2018   19:41:00   (  -0.13,-135.52) (   0.24,-137.22)  194.08                80
 05/06/2018   19:26:11   (  -0.13,-135.52) (  -0.42,-134.28)  141.05                80
 05/07/2018   07:50:15   (   0.13,-135.51) (  -0.72,-139.47)  450.07                80
 05/08/2018   19:14:01   (  -0.14,-135.51) (  -1.02,-131.33)  475.66                80