Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 25.  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) (   0.31,-127.71)    5.68                80
 09/27/2021   18:01:07   (  -0.33,-127.63) (  -0.42,-127.27)   40.82                80
 09/29/2021   06:17:27   (   0.34,-127.60) (  -0.63,-131.87)  486.24                80
 09/30/2021   05:59:27   (   0.33,-127.56) (   0.49,-126.87)   78.74                80
 10/01/2021   18:15:39   (  -0.34,-127.46) (   0.52,-131.43)  452.03                80
 10/02/2021   17:57:38   (  -0.33,-127.42) (  -0.54,-126.42)  112.73                80
 10/04/2021   06:14:00   (   0.35,-127.38) (  -0.44,-131.03)  414.98                80
 10/05/2021   05:55:59   (   0.34,-127.34) (   0.62,-126.02)  149.49                80
 10/06/2021   18:12:10   (  -0.35,-127.23) (   0.39,-130.58)  382.02                80
 10/07/2021   17:54:11   (  -0.34,-127.18) (  -0.73,-125.59)  182.17                80