Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 4 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)
 04/13/2021   18:55:49   (   0.04,-137.20) (   0.90,-140.96)  428.73                80
 04/14/2021   18:32:30   (   0.04,-137.20) (  -0.25,-135.97)  140.54                80
 04/16/2021   06:54:09   (  -0.04,-137.19) (  -0.77,-140.57)  384.08                80
 04/17/2021   06:30:48   (  -0.04,-137.19) (   0.31,-135.57)  184.59                80
 04/18/2021   18:49:40   (   0.03,-137.19) (   0.68,-140.13)  335.54                80
 04/19/2021   18:31:39   (   0.03,-137.18) (  -0.41,-135.13)  232.71                80
 04/21/2021   06:50:39   (  -0.03,-137.15) (  -0.62,-139.73)  293.39                80
 04/22/2021   06:27:19   (  -0.03,-137.14) (   0.53,-134.74)  274.51                80
 04/23/2021   18:46:09   (   0.02,-137.13) (   0.51,-139.29)  246.67                80
 04/24/2021   18:28:09   (   0.02,-137.11) (  -0.58,-134.29)  321.02                80
 04/26/2021   06:44:28   (  -0.02,-137.08) (  -0.45,-138.88)  206.03                80