Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2021   18:28:51   (   0.00,-137.23) (  -0.64,-134.39)  323.93                80
 01/29/2021   06:47:51   (  -0.00,-137.24) (  -0.40,-138.98)  199.59                80
 01/30/2021   06:24:32   (  -0.00,-137.24) (   0.72,-133.99)  370.36                80
 01/31/2021   18:43:23   (   0.00,-137.26) (   0.27,-138.55)  146.85                80
 02/01/2021   18:25:23   (   0.00,-137.27) (  -0.85,-133.56)  422.92                80
 02/03/2021   06:44:24   (  -0.00,-137.26) (  -0.18,-138.16)  101.44                80
 02/04/2021   06:21:04   (  -0.00,-137.26) (   0.94,-133.16)  467.83                80
 02/05/2021   18:39:54   (   0.01,-137.27) (   0.11,-137.71)   50.73                80
 02/08/2021   06:40:55   (  -0.01,-137.24) (  -0.01,-137.31)    7.73                80