Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 6.  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)
 04/06/2021   18:00:15   (   0.12,-128.27) (  -0.10,-127.21)  120.23                80
 04/08/2021   06:19:14   (  -0.11,-128.15) (  -0.91,-131.81)  416.97                80
 04/09/2021   05:55:54   (  -0.12,-128.12) (   0.17,-126.81)  150.05                80
 04/10/2021   18:14:45   (   0.11,-128.19) (   0.84,-131.37)  362.86                80
 04/11/2021   17:56:46   (   0.11,-128.17) (  -0.31,-126.38)  204.38                80
 04/13/2021   06:15:44   (  -0.11,-128.04) (  -0.77,-130.96)  333.01                80
 04/14/2021   05:52:24   (  -0.11,-128.02) (   0.32,-125.96)  233.50                80
 04/15/2021   18:11:16   (   0.10,-128.07) (   0.63,-130.54)  280.81                80
 04/16/2021   17:53:15   (   0.10,-128.04) (  -0.46,-125.54)  285.62                80
 04/18/2021   06:12:15   (  -0.09,-127.91) (  -0.56,-130.13)  252.78                80
 04/19/2021   05:48:54   (  -0.10,-127.87) (   0.53,-125.13)  312.83                80