Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 1 19.  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)
 01/21/2018   06:31:59   (  -0.00,-134.79) (  -0.35,-136.29)  171.07                80
 01/22/2018   06:08:39   (   0.00,-134.83) (   0.78,-131.30)  402.43                80
 01/23/2018   18:30:09   (   0.01,-134.87) (   0.23,-135.86)  112.59                80
 01/24/2018   18:09:28   (   0.00,-134.91) (  -0.90,-130.87)  460.72                80
 01/26/2018   06:28:27   (  -0.00,-134.98) (  -0.11,-135.47)   55.16                80
 01/28/2018   18:23:56   (  -0.00,-135.04) (  -0.01,-135.04)    1.33                80
 01/31/2018   06:22:13   (  -0.01,-135.13) (   0.08,-134.64)   55.87                80
 02/01/2018   18:41:04   (   0.02,-135.15) (   0.92,-139.20)  461.99                80
 02/02/2018   18:23:03   (   0.03,-135.17) (  -0.20,-134.21)  110.13                80