Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 4 18.  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)
 04/18/2021   18:49:39   (   0.04,-137.18) (   0.70,-140.13)  335.39                80
 04/19/2021   18:31:40   (   0.04,-137.17) (  -0.44,-135.14)  232.81                80
 04/21/2021   06:50:38   (  -0.04,-137.15) (  -0.64,-139.72)  293.37                80
 04/22/2021   06:27:19   (  -0.03,-137.14) (   0.51,-134.73)  274.47                80
 04/23/2021   18:46:09   (   0.03,-137.12) (   0.53,-139.29)  246.85                80
 04/24/2021   18:28:09   (   0.03,-137.11) (  -0.61,-134.30)  320.79                80
 04/26/2021   06:47:09   (  -0.03,-137.08) (  -0.41,-138.89)  206.32                80
 04/27/2021   06:23:48   (  -0.03,-137.06) (   0.67,-133.89)  360.81                80
 04/28/2021   18:42:39   (   0.03,-137.03) (   0.36,-138.45)  161.87                80
 04/29/2021   18:24:39   (   0.03,-137.00) (  -0.79,-133.46)  404.69                80
 05/01/2021   06:40:58   (  -0.02,-136.96) (  -0.24,-138.05)  124.16                80