Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 24.  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)
 09/25/2021   06:00:15   (   0.32,-127.76) (   0.32,-127.71)    5.28                80
 09/27/2021   18:01:07   (  -0.33,-127.63) (  -0.43,-127.28)   40.85                80
 09/29/2021   06:17:27   (   0.34,-127.61) (  -0.61,-131.87)  486.05                80
 09/30/2021   05:59:28   (   0.33,-127.56) (   0.50,-126.87)   78.97                80
 10/01/2021   18:15:38   (  -0.34,-127.46) (   0.57,-131.42)  451.98                80
 10/02/2021   17:57:38   (  -0.33,-127.42) (  -0.55,-126.43)  112.80                80
 10/04/2021   06:13:59   (   0.35,-127.39) (  -0.49,-131.02)  414.69                80
 10/05/2021   05:55:59   (   0.34,-127.34) (   0.63,-126.02)  149.80                80
 10/06/2021   18:12:11   (  -0.35,-127.23) (   0.38,-130.58)  381.89                80
 10/07/2021   17:54:10   (  -0.34,-127.18) (  -0.68,-125.58)  182.32                80