Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 12 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)
 12/19/2018   17:48:50   (  -0.15,-128.62) (  -0.06,-129.02)   45.88                80
 12/22/2018   05:47:05   (   0.15,-128.61) (   0.16,-128.62)    1.74                80
 12/24/2018   17:47:50   (  -0.13,-128.58) (  -0.20,-128.18)   45.31                80
 12/26/2018   06:06:46   (   0.12,-128.58) (  -0.83,-132.77)  477.70                80
 12/27/2018   05:43:25   (   0.12,-128.57) (   0.32,-127.78)   89.75                80
 12/28/2018   18:02:12   (  -0.11,-128.52) (   0.72,-132.34)  434.50                80
 12/29/2018   17:44:09   (  -0.11,-128.51) (  -0.36,-127.34)  133.82                80
 12/31/2018   06:03:06   (   0.10,-128.52) (  -0.66,-131.93)  388.59                80
 01/01/2019   05:39:44   (   0.11,-128.51) (   0.48,-126.94)  178.52                80