Simultaneous Nadir Overpasses (SNOs) between GOES-16 and METOP-B
TLE Epoch: 2021 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2021   14:21:45   (   0.07, -75.21) (  -0.37, -73.10)  239.96                80
 09/20/2021   02:43:26   (  -0.08, -75.19) (  -0.62, -77.70)  285.24                80
 09/21/2021   02:20:07   (  -0.07, -75.20) (   0.49, -72.71)  284.07                80
 09/22/2021   14:41:38   (   0.09, -75.22) (   0.52, -77.26)  232.48                80
 09/23/2021   14:18:18   (   0.08, -75.23) (  -0.59, -72.27)  337.37                80
 09/25/2021   02:39:59   (  -0.09, -75.22) (  -0.46, -76.86)  186.41                80
 09/26/2021   02:16:39   (  -0.09, -75.23) (   0.65, -71.86)  383.57                80
 09/27/2021   14:38:10   (   0.10, -75.26) (   0.35, -76.42)  132.27                80
 09/28/2021   14:14:51   (   0.10, -75.27) (  -0.76, -71.43)  438.02                80
 09/30/2021   02:36:31   (  -0.11, -75.27) (  -0.28, -76.02)   85.05                80
 10/01/2021   02:13:12   (  -0.11, -75.29) (   0.83, -71.02)  485.35                80