Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 23.  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)
 10/24/2021   06:03:00   (   0.34,-128.33) (   0.48,-127.75)   65.73                80
 10/25/2021   18:19:12   (  -0.34,-128.36) (   0.52,-132.32)  450.86                80
 10/26/2021   18:01:13   (  -0.33,-128.37) (  -0.58,-127.32)  119.65                80
 10/28/2021   06:20:13   (   0.33,-128.37) (  -0.46,-131.92)  403.47                80
 10/29/2021   05:56:53   (   0.33,-128.38) (   0.64,-126.92)  166.60                80
 10/30/2021   18:15:46   (  -0.32,-128.40) (   0.36,-131.48)  350.97                80
 10/31/2021   17:57:46   (  -0.32,-128.41) (  -0.74,-126.49)  218.94                80
 11/02/2021   06:16:47   (   0.32,-128.41) (  -0.29,-131.08)  304.70                80
 11/03/2021   05:53:27   (   0.32,-128.41) (   0.82,-126.09)  264.80                80
 11/04/2021   18:12:19   (  -0.32,-128.43) (   0.19,-130.65)  253.85                80
 11/05/2021   17:54:20   (  -0.32,-128.43) (  -0.91,-125.65)  315.26                80