Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 13.  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   06:48:57   (   0.03,-137.19) (  -0.52,-139.77)  293.17                80
 09/14/2021   06:30:58   (   0.03,-137.18) (   0.59,-134.77)  275.23                80
 09/15/2021   18:47:09   (  -0.03,-137.17) (   0.43,-139.33)  245.70                80
 09/16/2021   18:29:10   (  -0.03,-137.16) (  -0.68,-134.33)  322.41                80
 09/18/2021   06:48:10   (   0.03,-137.14) (  -0.37,-138.92)  203.34                80
 09/19/2021   06:24:51   (   0.03,-137.13) (   0.74,-133.93)  364.65                80
 09/20/2021   18:43:42   (  -0.03,-137.11) (   0.27,-138.49)  156.54                80
 09/21/2021   18:25:42   (  -0.03,-137.10) (  -0.84,-133.49)  411.36                80
 09/23/2021   06:44:43   (   0.03,-137.08) (  -0.21,-138.08)  114.71                80
 09/24/2021   06:21:23   (   0.03,-137.06) (   0.91,-133.09)  452.80                80
 09/25/2021   18:40:15   (  -0.03,-137.04) (   0.10,-137.65)   69.45                80
 09/26/2021   18:22:15   (  -0.02,-137.02) (  -1.01,-132.65)  497.66                80