Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 2.  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)
 04/04/2021   05:59:24   (  -0.13,-128.22) (   0.01,-127.65)   65.76                80
 04/05/2021   18:18:15   (   0.12,-128.29) (   1.01,-132.21)  446.80                80
 04/06/2021   18:00:16   (   0.12,-128.28) (  -0.13,-127.22)  120.68                80
 04/08/2021   06:19:14   (  -0.11,-128.15) (  -0.94,-131.80)  415.95                80
 04/09/2021   05:55:55   (  -0.12,-128.13) (   0.21,-126.81)  151.27                80
 04/10/2021   18:14:46   (   0.11,-128.20) (   0.80,-131.38)  361.62                80
 04/11/2021   17:56:45   (   0.12,-128.18) (  -0.28,-126.37)  205.82                80
 04/13/2021   06:15:45   (  -0.11,-128.06) (  -0.73,-130.97)  330.94                80
 04/14/2021   05:52:24   (  -0.11,-128.04) (   0.35,-125.97)  235.75                80
 04/15/2021   18:11:15   (   0.11,-128.09) (   0.65,-130.53)  278.50                80