Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 12 15.  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)
 12/17/2018   05:53:25   (   0.16,-128.62) (  -0.01,-129.46)   94.86                80
 12/18/2018   05:30:03   (   0.17,-128.62) (   1.07,-124.45)  473.77                80
 12/19/2018   17:48:50   (  -0.15,-128.61) (  -0.04,-129.01)   46.73                80
 12/22/2018   05:49:45   (   0.14,-128.61) (   0.14,-128.62)    1.16                80
 12/24/2018   17:47:50   (  -0.13,-128.56) (  -0.24,-128.18)   43.83                80
 12/26/2018   06:06:47   (   0.12,-128.57) (  -0.79,-132.78)  478.76                80
 12/27/2018   05:43:24   (   0.12,-128.55) (   0.29,-127.78)   88.52                80
 12/28/2018   18:02:12   (  -0.11,-128.50) (   0.75,-132.33)  436.62                80
 12/29/2018   17:44:10   (  -0.11,-128.49) (  -0.39,-127.34)  131.55                80