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) (  -0.29,-128.13)   53.43                80
 12/14/2018   06:20:54   (   0.15,-128.62) (  -0.78,-132.72)  467.57                80
 12/15/2018   05:57:36   (   0.16,-128.62) (   0.33,-127.72)  101.12                80
 12/16/2018   18:16:29   (  -0.15,-128.60) (   0.66,-132.29)  419.94                80
 12/17/2018   17:58:31   (  -0.15,-128.61) (  -0.46,-127.30)  149.43                80
 12/19/2018   06:17:32   (   0.14,-128.63) (  -0.61,-131.88)  371.67                80
 12/20/2018   05:54:15   (   0.15,-128.62) (   0.56,-126.90)  196.23                80
 12/21/2018   18:13:07   (  -0.14,-128.58) (   0.48,-131.46)  327.05                80
 12/22/2018   17:55:08   (  -0.14,-128.58) (  -0.63,-126.46)  241.35                80
 12/24/2018   06:14:10   (   0.12,-128.59) (  -0.43,-131.05)  280.34                80
 12/25/2018   05:50:51   (   0.13,-128.58) (   0.68,-126.06)  286.71                80