Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 1 13.  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)
 01/15/2020   06:09:14   (   0.02,-128.44) (  -0.21,-129.37)  107.39                80
 01/16/2020   05:45:56   (   0.03,-128.44) (   0.93,-124.39)  461.92                80
 01/17/2020   18:07:28   (  -0.02,-128.42) (   0.08,-128.95)   59.31                80
 01/20/2020   06:03:11   (   0.02,-128.44) (   0.03,-128.55)   12.36                80
 01/22/2020   18:01:24   (  -0.02,-128.42) (  -0.10,-128.12)   34.56                80
 01/24/2020   06:23:05   (   0.01,-128.43) (  -0.93,-132.71)  487.68                80
 01/25/2020   05:59:45   (   0.02,-128.42) (   0.15,-127.71)   80.84                80
 01/26/2020   18:21:18   (  -0.01,-128.40) (   0.85,-132.27)  441.68                80
 01/27/2020   17:57:58   (  -0.01,-128.39) (  -0.23,-127.27)  126.79                80