Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 16.  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)
 10/16/2021   18:05:23   (  -0.34,-128.18) (  -0.16,-128.97)   90.10                80
 10/17/2021   17:47:24   (  -0.34,-128.20) (  -1.25,-123.97)  481.76                80
 10/19/2021   06:03:45   (   0.34,-128.24) (   0.26,-128.57)   38.28                80
 10/21/2021   18:04:38   (  -0.34,-128.29) (  -0.36,-128.14)   16.92                80
 10/24/2021   06:00:40   (   0.34,-128.34) (   0.47,-127.75)   67.50                59
 10/25/2021   18:19:12   (  -0.34,-128.36) (   0.53,-132.31)  450.24                80
 10/26/2021   18:01:12   (  -0.33,-128.38) (  -0.56,-127.32)  120.50                80
 10/28/2021   06:20:13   (   0.33,-128.40) (  -0.47,-131.91)  400.67                80
 10/29/2021   05:56:54   (   0.33,-128.41) (   0.68,-126.93)  169.65                80