Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2020 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2020   06:04:34   (  -0.22,-128.26) (  -0.28,-128.49)   26.83                80
 12/23/2020   18:05:28   (   0.21,-128.26) (   0.14,-128.07)   22.49                80
 12/26/2020   06:03:50   (  -0.20,-128.28) (  -0.08,-127.66)   69.81                80
 12/27/2020   18:20:02   (   0.18,-128.27) (   1.07,-132.23)  451.67                80
 12/28/2020   18:02:03   (   0.20,-128.26) (  -0.02,-127.23)  117.52                80
 12/30/2020   06:18:25   (  -0.17,-128.27) (  -0.94,-131.84)  406.50                80
 12/31/2020   06:00:26   (  -0.19,-128.26) (   0.14,-126.84)  162.60                80
 01/01/2021   18:16:37   (   0.17,-128.24) (   0.90,-131.39)  359.73                80
 01/02/2021   17:58:37   (   0.19,-128.23) (  -0.20,-126.39)  208.89                80