Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 5 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)
 05/18/2021   18:32:03   (   0.04,-137.20) (  -0.42,-135.19)  229.56                80
 05/20/2021   06:51:06   (  -0.03,-137.20) (  -0.59,-139.79)  295.11                80
 05/21/2021   06:27:47   (  -0.03,-137.20) (   0.52,-134.80)  273.53                80
 05/22/2021   18:46:40   (   0.03,-137.19) (   0.51,-139.36)  246.82                80
 05/23/2021   18:28:41   (   0.03,-137.19) (  -0.61,-134.37)  321.46                80
 05/25/2021   06:46:48   (  -0.03,-137.17) (  -0.40,-138.97)  204.39                25
 05/26/2021   06:24:25   (  -0.03,-137.16) (   0.71,-133.98)  363.24                80
 05/27/2021   18:43:17   (   0.02,-137.14) (   0.32,-138.54)  158.91                80
 05/28/2021   18:25:19   (   0.01,-137.12) (  -0.80,-133.54)  408.19                80
 05/30/2021   06:44:20   (  -0.01,-137.10) (  -0.27,-138.13)  119.05                80
 05/31/2021   06:21:02   (  -0.00,-137.08) (   0.85,-133.14)  447.88                80