Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 20.  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)
 10/21/2021   18:04:38   (  -0.34,-128.29) (  -0.35,-128.14)   16.87                80
 10/24/2021   06:02:59   (   0.34,-128.33) (   0.46,-127.75)   66.22                80
 10/25/2021   18:19:12   (  -0.34,-128.35) (   0.54,-132.31)  451.01                80
 10/26/2021   18:01:12   (  -0.33,-128.37) (  -0.56,-127.32)  119.56                80
 10/28/2021   06:20:12   (   0.33,-128.38) (  -0.48,-131.91)  402.60                80
 10/29/2021   05:56:54   (   0.33,-128.39) (   0.68,-126.93)  167.57                80
 10/30/2021   18:15:45   (  -0.32,-128.41) (   0.38,-131.48)  350.74                80
 10/31/2021   17:57:47   (  -0.32,-128.41) (  -0.78,-126.49)  219.28                80
 11/02/2021   06:16:47   (   0.32,-128.42) (  -0.25,-131.09)  303.39                80