Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 2 21.  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)
 02/21/2021   18:10:56   (   0.13,-128.11) (   0.49,-129.75)  186.98                80
 02/22/2021   17:47:36   (   0.12,-128.13) (  -0.64,-124.76)  384.57                80
 02/24/2021   06:09:16   (  -0.13,-128.09) (  -0.41,-129.34)  143.29                80
 02/25/2021   05:45:56   (  -0.12,-128.11) (   0.72,-124.35)  427.95                80
 02/26/2021   18:07:27   (   0.14,-128.22) (   0.30,-128.91)   79.59                80
 02/27/2021   17:44:08   (   0.13,-128.24) (  -0.83,-123.92)  491.56                80
 03/01/2021   06:05:47   (  -0.14,-128.19) (  -0.21,-128.51)   36.91                80
 03/03/2021   18:01:19   (   0.14,-128.30) (   0.11,-128.08)   25.28                80
 03/06/2021   05:59:39   (  -0.14,-128.25) (  -0.01,-127.68)   65.94                80