Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 19.  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)
 10/19/2021   06:03:45   (   0.34,-128.24) (   0.25,-128.57)   38.70                80
 10/21/2021   18:04:37   (  -0.34,-128.29) (  -0.35,-128.14)   16.89                80
 10/24/2021   06:00:50   (   0.34,-128.33) (   0.46,-127.75)   66.59                49
 10/25/2021   18:19:12   (  -0.34,-128.36) (   0.54,-132.31)  450.85                80
 10/26/2021   18:01:12   (  -0.33,-128.37) (  -0.55,-127.32)  119.78                80
 10/28/2021   06:20:12   (   0.33,-128.39) (  -0.48,-131.91)  402.03                80
 10/29/2021   05:56:54   (   0.33,-128.40) (   0.68,-126.93)  168.18                80
 10/30/2021   18:15:45   (  -0.32,-128.41) (   0.39,-131.48)  350.34                80
 10/31/2021   17:57:47   (  -0.32,-128.42) (  -0.77,-126.49)  219.73                80