Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 23.  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)
 03/23/2021   17:50:04   (   0.14,-128.44) (  -0.69,-124.74)  421.94                80
 03/25/2021   06:09:02   (  -0.14,-128.34) (  -0.38,-129.32)  112.15                80
 03/26/2021   05:45:43   (  -0.14,-128.33) (   0.76,-124.33)  456.06                80
 03/27/2021   18:04:34   (   0.14,-128.40) (   0.26,-128.89)   55.89                80
 03/30/2021   06:05:33   (  -0.14,-128.29) (  -0.19,-128.48)   22.20                80
 04/01/2021   18:03:45   (   0.14,-128.33) (   0.08,-128.05)   31.88                80
 04/04/2021   05:59:24   (  -0.13,-128.20) (  -0.00,-127.65)   63.50                80
 04/05/2021   18:18:15   (   0.12,-128.25) (   1.02,-132.21)  451.47                80