Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 4 8.  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)
 04/09/2021   18:36:00   (   0.04,-137.21) (  -0.07,-136.81)   45.84                80
 04/11/2021   06:57:38   (  -0.04,-137.19) (  -1.00,-141.40)  479.91                80
 04/12/2021   06:34:18   (  -0.04,-137.19) (   0.14,-136.41)   88.70                80
 04/13/2021   18:53:44   (   0.04,-137.19) (   0.86,-140.97)  430.70                46
 04/14/2021   18:32:29   (   0.04,-137.18) (  -0.22,-135.97)  137.46                80
 04/16/2021   06:54:08   (  -0.04,-137.14) (  -0.79,-140.56)  389.66                80
 04/17/2021   06:30:48   (  -0.03,-137.13) (   0.29,-135.56)  177.96                80
 04/18/2021   18:49:39   (   0.03,-137.12) (   0.70,-140.13)  343.05                80
 04/19/2021   18:31:40   (   0.03,-137.10) (  -0.44,-135.14)  224.12                80
 04/21/2021   06:47:58   (  -0.02,-137.05) (  -0.64,-139.72)  304.53                80