Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 17.  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)
 12/19/2018   06:17:33   (   0.14,-128.63) (  -0.56,-131.89)  371.54                80
 12/20/2018   05:54:14   (   0.15,-128.62) (   0.55,-126.90)  196.44                80
 12/21/2018   18:13:07   (  -0.14,-128.59) (   0.49,-131.45)  325.69                80
 12/22/2018   17:55:08   (  -0.14,-128.59) (  -0.62,-126.46)  242.82                80
 12/24/2018   06:14:10   (   0.12,-128.60) (  -0.45,-131.05)  279.59                80
 12/25/2018   05:50:52   (   0.13,-128.58) (   0.72,-126.07)  287.59                80
 12/26/2018   18:09:43   (  -0.11,-128.54) (   0.38,-130.61)  236.57                80
 12/27/2018   17:51:46   (  -0.12,-128.53) (  -0.80,-125.63)  331.47                80
 12/29/2018   06:10:47   (   0.10,-128.54) (  -0.27,-130.22)  190.51                80
 12/30/2018   05:47:29   (   0.11,-128.53) (   0.84,-125.22)  376.36                80
 12/31/2018   18:06:21   (  -0.10,-128.47) (   0.20,-129.78)  149.15                80