Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 4 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2018   06:12:40   (   0.06,-135.24) (   0.74,-132.16)  350.40                80
 04/15/2018   18:28:49   (  -0.07,-135.27) (   0.28,-136.73)  166.30                80
 04/16/2018   18:10:48   (  -0.06,-135.30) (  -0.86,-131.74)  405.41                80
 04/18/2018   06:27:07   (   0.07,-135.33) (  -0.17,-136.34)  114.81                80
 04/19/2018   06:09:06   (   0.07,-135.35) (   0.97,-131.35)  456.35                80
 04/20/2018   18:25:15   (  -0.08,-135.37) (   0.04,-135.91)   62.06                80
 04/23/2018   06:23:33   (   0.09,-135.41) (   0.08,-135.52)   13.33                80
 04/25/2018   18:24:22   (  -0.10,-135.43) (  -0.20,-135.10)   38.20                80
 04/27/2018   06:40:39   (   0.10,-135.44) (  -0.87,-139.69)  484.06                80