Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2021   05:45:58   (   0.03,-128.30) (   0.92,-124.40)  444.48                80
 05/24/2021   18:04:50   (  -0.03,-128.36) (   0.08,-128.96)   68.20                80
 05/27/2021   06:05:53   (   0.04,-128.37) (   0.00,-128.57)   22.36                80
 05/29/2021   18:04:07   (  -0.05,-128.42) (  -0.13,-128.14)   32.70                80
 05/31/2021   06:23:08   (   0.06,-128.42) (  -0.92,-132.74)  491.74                80
 06/01/2021   05:59:50   (   0.06,-128.43) (   0.22,-127.75)   78.01                80
 06/02/2021   18:18:42   (  -0.06,-128.46) (   0.79,-132.31)  438.38                80
 06/03/2021   18:00:44   (  -0.06,-128.47) (  -0.34,-127.32)  132.23                80
 06/05/2021   06:19:45   (   0.06,-128.48) (  -0.69,-131.91)  391.34                80