Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 8.  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) (   0.22,-128.57)    4.25                80
 12/12/2018   18:01:53   (  -0.17,-128.60) (  -0.27,-128.13)   53.46                80
 12/14/2018   06:20:55   (   0.15,-128.62) (  -0.73,-132.73)  467.29                80
 12/15/2018   05:57:37   (   0.16,-128.62) (   0.38,-127.73)  101.44                80
 12/16/2018   18:16:29   (  -0.15,-128.60) (   0.67,-132.29)  419.60                80
 12/17/2018   17:58:31   (  -0.15,-128.61) (  -0.44,-127.29)  149.82                80
 12/19/2018   06:17:33   (   0.14,-128.63) (  -0.56,-131.89)  371.04                80
 12/20/2018   05:54:14   (   0.15,-128.62) (   0.55,-126.90)  196.93                80
 12/21/2018   18:13:07   (  -0.14,-128.59) (   0.49,-131.45)  326.35                80
 12/22/2018   17:55:08   (  -0.14,-128.58) (  -0.62,-126.46)  242.10                80