Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 12 6.  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)
 12/06/2021   18:04:56   (  -0.19,-128.05) (  -0.17,-128.11)    7.68                80
 12/09/2021   06:00:35   (   0.18,-127.95) (   0.22,-127.70)   27.95                80
 12/10/2021   18:22:08   (  -0.16,-127.92) (   0.82,-132.26)  494.22                80
 12/11/2021   17:58:48   (  -0.17,-127.89) (  -0.29,-127.26)   71.63                80
 12/13/2021   06:20:28   (   0.16,-127.82) (  -0.76,-131.84)  458.72                80
 12/14/2021   05:57:09   (   0.17,-127.79) (   0.40,-126.86)  106.84                80
 12/15/2021   18:18:40   (  -0.15,-127.76) (   0.69,-131.41)  415.81                80
 12/16/2021   17:55:22   (  -0.16,-127.73) (  -0.48,-126.42)  149.51                80
 12/18/2021   06:17:01   (   0.14,-127.65) (  -0.58,-131.01)  381.86                80
 12/19/2021   05:53:42   (   0.15,-127.61) (   0.53,-126.01)  182.99                80