Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 12 17.  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) (  -0.03,-129.45)   94.89                80
 12/18/2018   05:30:03   (   0.17,-128.62) (   1.11,-124.46)  473.76                80
 12/19/2018   17:48:50   (  -0.15,-128.61) (  -0.08,-129.02)   46.40                80
 12/22/2018   05:49:44   (   0.15,-128.61) (   0.12,-128.61)    2.98                80
 12/24/2018   17:47:50   (  -0.13,-128.57) (  -0.22,-128.18)   44.19                80
 12/26/2018   06:06:46   (   0.12,-128.58) (  -0.81,-132.78)  478.44                80
 12/27/2018   05:43:24   (   0.12,-128.56) (   0.27,-127.77)   88.90                80
 12/28/2018   18:02:11   (  -0.11,-128.51) (   0.77,-132.33)  436.03                80
 12/29/2018   17:44:10   (  -0.11,-128.50) (  -0.37,-127.34)  132.17                80