Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 4 20.  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)
 04/21/2021   06:50:39   (  -0.04,-137.20) (  -0.57,-139.73)  288.11                80
 04/22/2021   06:27:19   (  -0.03,-137.20) (   0.51,-134.73)  281.10                80
 04/23/2021   18:46:09   (   0.03,-137.20) (   0.53,-139.29)  238.33                80
 04/24/2021   18:28:10   (   0.03,-137.20) (  -0.62,-134.30)  330.71                80
 04/26/2021   06:47:09   (  -0.03,-137.19) (  -0.41,-138.89)  194.00                80
 04/27/2021   06:23:48   (  -0.03,-137.18) (   0.68,-133.89)  374.50                80
 04/28/2021   18:42:40   (   0.03,-137.17) (   0.29,-138.46)  146.33                80
 04/29/2021   18:24:39   (   0.03,-137.16) (  -0.80,-133.46)  421.63                80
 05/01/2021   06:43:39   (  -0.02,-137.13) (  -0.23,-138.05)  104.79                80
 05/02/2021   06:20:18   (  -0.02,-137.12) (   0.86,-133.05)  462.66                80
 05/03/2021   18:39:09   (   0.01,-137.09) (   0.10,-137.62)   59.45                80