Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 21.  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)
 03/21/2021   05:49:12   (  -0.15,-128.36) (   0.54,-125.16)  364.32                80
 03/22/2021   18:08:04   (   0.14,-128.44) (   0.43,-129.73)  146.94                80
 03/23/2021   17:50:04   (   0.14,-128.44) (  -0.71,-124.74)  421.63                80
 03/25/2021   06:09:03   (  -0.14,-128.34) (  -0.36,-129.33)  112.35                80
 03/26/2021   05:45:43   (  -0.14,-128.33) (   0.78,-124.34)  455.78                80
 03/27/2021   18:04:35   (   0.14,-128.40) (   0.25,-128.89)   56.43                80
 03/30/2021   06:05:33   (  -0.14,-128.29) (  -0.18,-128.49)   22.73                80
 04/01/2021   18:03:45   (   0.14,-128.33) (   0.07,-128.06)   30.99                80