Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 22.  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)
 12/23/2020   06:09:55   (  -0.21,-128.27) (  -0.63,-130.14)  213.81                80
 12/24/2020   05:51:57   (  -0.23,-128.27) (   0.49,-125.15)  355.99                80
 12/25/2020   18:08:09   (   0.20,-128.26) (   0.55,-129.71)  165.67                80
 12/26/2020   17:50:10   (   0.22,-128.26) (  -0.58,-124.72)  403.56                80
 12/28/2020   06:06:32   (  -0.19,-128.27) (  -0.46,-129.32)  120.23                80
 12/29/2020   05:48:33   (  -0.21,-128.27) (   0.67,-124.33)  448.86                80
 12/30/2020   18:04:46   (   0.19,-128.25) (   0.36,-128.89)   73.84                80
 12/31/2020   17:46:47   (   0.21,-128.24) (  -0.77,-123.90)  494.71                80
 01/02/2021   06:03:08   (  -0.19,-128.23) (  -0.27,-128.50)   30.65                80
 01/04/2021   18:04:02   (   0.18,-128.20) (   0.17,-128.07)   14.87                80