Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 20.  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)
 05/20/2021   17:50:14   (  -0.03,-128.28) (  -0.78,-124.79)  398.07                80
 05/22/2021   06:09:17   (   0.03,-128.28) (  -0.21,-129.39)  126.46                80
 05/23/2021   05:45:58   (   0.02,-128.30) (   0.92,-124.40)  444.44                80
 05/24/2021   18:04:50   (  -0.03,-128.36) (   0.08,-128.97)   68.60                80
 05/27/2021   06:05:53   (   0.03,-128.37) (   0.00,-128.57)   22.66                80
 05/29/2021   18:04:07   (  -0.04,-128.42) (  -0.13,-128.14)   32.01                80
 05/31/2021   06:23:08   (   0.05,-128.42) (  -0.92,-132.74)  492.31                80
 06/01/2021   05:59:50   (   0.05,-128.42) (   0.22,-127.75)   77.38                80
 06/02/2021   18:18:42   (  -0.06,-128.45) (   0.79,-132.31)  439.38                80