Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 5 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)
 05/21/2021   06:30:26   (  -0.04,-137.19) (   0.48,-134.79)  273.96                80
 05/22/2021   18:46:38   (   0.04,-137.20) (   0.53,-139.35)  245.56                80
 05/23/2021   18:28:40   (   0.04,-137.19) (  -0.60,-134.36)  322.94                80
 05/25/2021   06:45:01   (  -0.04,-137.17) (  -0.45,-138.95)  203.06                80
 05/26/2021   06:27:03   (  -0.04,-137.16) (   0.68,-133.96)  364.77                80
 05/27/2021   18:43:15   (   0.03,-137.15) (   0.32,-138.53)  156.55                80
 05/28/2021   18:25:16   (   0.03,-137.13) (  -0.81,-133.54)  410.80                80
 05/30/2021   06:44:18   (  -0.02,-137.10) (  -0.24,-138.13)  116.59                80
 05/31/2021   06:20:58   (  -0.02,-137.09) (   0.84,-133.13)  450.54                80
 06/01/2021   18:39:51   (   0.01,-137.07) (   0.17,-137.69)   71.48                80
 06/02/2021   18:21:52   (   0.01,-137.05) (  -0.96,-132.70)  495.68                80