Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 6 19.  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)
 06/20/2021   18:46:52   (   0.03,-137.19) (   0.54,-139.35)  247.05                80
 06/21/2021   18:28:54   (   0.03,-137.19) (  -0.60,-134.37)  321.56                80
 06/23/2021   06:45:15   (  -0.03,-137.17) (  -0.41,-138.96)  204.19                80
 06/24/2021   06:27:16   (  -0.03,-137.16) (   0.67,-133.96)  363.76                80
 06/25/2021   18:43:28   (   0.03,-137.14) (   0.35,-138.52)  157.56                80
 06/26/2021   18:25:29   (   0.03,-137.13) (  -0.79,-133.54)  410.10                80
 06/28/2021   06:41:50   (  -0.02,-137.11) (  -0.27,-138.12)  116.45                80
 06/29/2021   06:23:51   (  -0.02,-137.09) (   0.88,-133.14)  451.12                80
 06/30/2021   18:40:04   (   0.02,-137.07) (   0.15,-137.70)   70.58                80
 07/01/2021   18:22:04   (   0.02,-137.06) (  -0.94,-132.70)  496.91                80
 07/03/2021   06:41:05   (  -0.02,-137.03) (  -0.05,-137.30)   30.00                80