Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 10.  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)
 09/10/2021   18:50:36   (  -0.04,-137.20) (   0.61,-140.17)  337.34                80
 09/11/2021   18:32:37   (  -0.03,-137.20) (  -0.50,-135.17)  231.63                80
 09/13/2021   06:48:57   (   0.03,-137.19) (  -0.55,-139.76)  293.33                80
 09/14/2021   06:30:58   (   0.03,-137.18) (   0.56,-134.77)  274.99                80
 09/15/2021   18:47:09   (  -0.03,-137.17) (   0.45,-139.32)  246.03                80
 09/16/2021   18:29:09   (  -0.03,-137.15) (  -0.66,-134.33)  321.99                80
 09/18/2021   06:48:10   (   0.03,-137.13) (  -0.39,-138.92)  203.81                80
 09/19/2021   06:24:50   (   0.02,-137.12) (   0.72,-133.92)  364.14                80
 09/20/2021   18:43:41   (  -0.02,-137.10) (   0.29,-138.48)  157.13                80
 09/21/2021   18:25:42   (  -0.02,-137.09) (  -0.83,-133.49)  410.69                80
 09/23/2021   06:44:42   (   0.02,-137.07) (  -0.22,-138.08)  115.49                80