Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 1 18.  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)
 01/19/2018   18:10:21   (  -0.01,-134.71) (  -0.69,-131.69)  343.52                80
 01/21/2018   06:31:59   (  -0.00,-134.79) (  -0.32,-136.29)  171.11                80
 01/22/2018   06:08:39   (   0.00,-134.83) (   0.80,-131.30)  402.39                80
 01/23/2018   18:30:09   (   0.00,-134.87) (   0.21,-135.87)  112.62                80
 01/24/2018   18:06:49   (  -0.00,-134.91) (  -0.92,-130.87)  460.70                80
 01/26/2018   06:28:27   (  -0.00,-134.98) (  -0.09,-135.47)   55.28                80
 01/28/2018   18:26:36   (  -0.00,-135.04) (   0.02,-135.03)    2.89                80
 01/31/2018   06:22:14   (  -0.01,-135.13) (   0.10,-134.64)   55.73                80
 02/01/2018   18:41:04   (   0.02,-135.15) (   0.90,-139.21)  462.02                80