Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 7.  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)
 12/10/2018   06:00:59   (   0.18,-128.59) (   0.18,-128.56)    3.06                80
 12/12/2018   18:01:53   (  -0.17,-128.60) (  -0.30,-128.13)   53.65                80
 12/14/2018   06:20:55   (   0.15,-128.62) (  -0.77,-132.72)  467.11                80
 12/15/2018   05:57:36   (   0.16,-128.62) (   0.34,-127.73)  101.66                80
 12/16/2018   18:16:28   (  -0.15,-128.61) (   0.70,-132.28)  419.34                80
 12/17/2018   17:58:31   (  -0.15,-128.61) (  -0.47,-127.30)  150.14                80
 12/19/2018   06:17:32   (   0.14,-128.64) (  -0.60,-131.89)  370.68                80
 12/20/2018   05:54:14   (   0.15,-128.63) (   0.52,-126.89)  197.32                80
 12/21/2018   18:13:06   (  -0.14,-128.59) (   0.53,-131.45)  325.91                80