Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 5.  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)
 04/05/2021   18:18:15   (   0.12,-128.29) (   1.01,-132.21)  447.02                80
 04/06/2021   18:00:16   (   0.12,-128.27) (  -0.13,-127.22)  120.32                80
 04/08/2021   06:19:14   (  -0.11,-128.15) (  -0.94,-131.80)  416.80                80
 04/09/2021   05:55:55   (  -0.12,-128.13) (   0.21,-126.81)  150.29                80
 04/10/2021   18:14:46   (   0.11,-128.19) (   0.80,-131.38)  362.56                80
 04/11/2021   17:56:45   (   0.12,-128.17) (  -0.28,-126.37)  204.72                80
 04/13/2021   06:15:45   (  -0.11,-128.05) (  -0.73,-130.97)  332.57                80
 04/14/2021   05:52:24   (  -0.11,-128.02) (   0.35,-125.97)  233.98                80
 04/15/2021   18:11:16   (   0.10,-128.07) (   0.65,-130.53)  280.21                80
 04/16/2021   17:53:15   (   0.10,-128.05) (  -0.43,-125.53)  286.27                80
 04/18/2021   06:12:14   (  -0.09,-127.91) (  -0.58,-130.12)  252.02                80