Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 12.  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)
 09/13/2021   06:48:58   (   0.03,-137.19) (  -0.51,-139.77)  293.19                80
 09/14/2021   06:30:58   (   0.03,-137.18) (   0.60,-134.77)  275.22                80
 09/15/2021   18:47:08   (  -0.03,-137.17) (   0.48,-139.32)  245.77                80
 09/16/2021   18:29:09   (  -0.03,-137.16) (  -0.63,-134.32)  322.35                80
 09/18/2021   06:48:10   (   0.03,-137.14) (  -0.36,-138.93)  203.40                80
 09/19/2021   06:24:51   (   0.03,-137.13) (   0.75,-133.93)  364.58                80
 09/20/2021   18:43:42   (  -0.03,-137.11) (   0.26,-138.49)  156.65                80
 09/21/2021   18:25:43   (  -0.03,-137.10) (  -0.85,-133.49)  411.26                80
 09/23/2021   06:44:43   (   0.03,-137.08) (  -0.19,-138.08)  114.81                80
 09/24/2021   06:21:23   (   0.03,-137.06) (   0.92,-133.09)  452.70                80
 09/25/2021   18:40:15   (  -0.03,-137.03) (   0.09,-137.65)   69.61                80