Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/12/2018   18:01:53   (  -0.17,-128.60) (  -0.26,-128.13)   53.37                80
 12/14/2018   06:20:55   (   0.15,-128.62) (  -0.74,-132.73)  467.52                80
 12/15/2018   05:57:37   (   0.16,-128.62) (   0.37,-127.73)  101.14                80
 12/16/2018   18:16:29   (  -0.15,-128.60) (   0.68,-132.29)  419.92                80
 12/17/2018   17:58:30   (  -0.15,-128.61) (  -0.43,-127.29)  149.45                80
 12/19/2018   06:17:33   (   0.14,-128.63) (  -0.57,-131.89)  371.54                80
 12/20/2018   05:54:14   (   0.15,-128.62) (   0.54,-126.90)  196.34                80
 12/21/2018   18:13:06   (  -0.14,-128.58) (   0.50,-131.45)  326.96                80
 12/22/2018   17:55:08   (  -0.14,-128.58) (  -0.61,-126.46)  241.44                80
 12/24/2018   06:14:09   (   0.12,-128.59) (  -0.45,-131.05)  280.16                80