Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 27.  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)
 09/27/2021   18:01:06   (  -0.33,-127.63) (  -0.41,-127.27)   40.96                80
 09/29/2021   06:17:28   (   0.34,-127.60) (  -0.58,-131.88)  486.43                80
 09/30/2021   05:59:27   (   0.33,-127.56) (   0.48,-126.87)   78.55                80
 10/01/2021   18:15:38   (  -0.35,-127.46) (   0.53,-131.43)  451.95                80
 10/02/2021   17:57:38   (  -0.33,-127.42) (  -0.53,-126.42)  112.81                80
 10/04/2021   06:13:59   (   0.35,-127.38) (  -0.45,-131.03)  415.30                80
 10/05/2021   05:55:59   (   0.34,-127.33) (   0.60,-126.02)  149.18                80
 10/06/2021   18:12:10   (  -0.35,-127.23) (   0.40,-130.58)  382.08                80
 10/07/2021   17:54:11   (  -0.35,-127.18) (  -0.71,-125.58)  182.05                80
 10/09/2021   06:10:31   (   0.36,-127.13) (  -0.32,-130.18)  346.86                80
 10/10/2021   05:52:31   (   0.35,-127.08) (   0.74,-125.17)  216.78                80