Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 3 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2018   12:53:20   (   0.06,-134.83) (   0.25,-135.76)  104.69                80
 03/22/2018   12:44:27   (   0.06,-134.79) (  -0.36,-132.94)  211.84                80
 03/25/2018   01:03:12   (  -0.06,-134.68) (  -0.82,-138.02)  380.98                80
 03/26/2018   00:51:39   (  -0.07,-134.63) (  -0.22,-135.20)   65.18                80
 03/27/2018   00:42:48   (  -0.07,-134.58) (   0.45,-132.39)  250.57                80
 03/29/2018   13:01:27   (   0.07,-134.46) (   0.79,-137.44)  340.63                80
 03/30/2018   12:49:55   (   0.07,-134.41) (   0.10,-134.63)   25.06                80
 03/31/2018   12:41:03   (   0.07,-134.36) (  -0.53,-131.82)  290.63                80
 04/03/2018   00:59:49   (  -0.07,-134.22) (  -0.71,-136.89)  305.39                80