Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2018   07:47:20   (   0.10,-135.39) (  -0.74,-139.39)  454.97                80
 04/22/2018   19:13:47   (  -0.10,-135.41) (  -0.99,-131.25)  472.65                80
 04/23/2018   07:35:11   (   0.11,-135.42) (  -0.09,-136.45)  116.75                80
 04/25/2018   07:25:41   (   0.11,-135.45) (   0.51,-133.50)  221.33                80
 04/25/2018   19:46:57   (  -0.11,-135.45) (   0.60,-138.65)  365.03                80
 04/27/2018   19:34:48   (  -0.11,-135.47) (  -0.07,-135.71)   27.16                80
 04/29/2018   19:19:58   (  -0.11,-135.49) (  -0.68,-132.76)  310.34                80
 04/30/2018   07:41:23   (   0.12,-135.50) (  -0.40,-137.96)  279.49                80
 05/02/2018   07:31:53   (   0.12,-135.51) (   0.22,-135.01)   57.30                80
 05/04/2018   07:19:43   (   0.13,-135.52) (   0.84,-132.06)  393.45                80
 05/04/2018   19:41:00   (  -0.13,-135.52) (   0.20,-137.23)  193.24                80