Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 9 7.  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)
 09/08/2021   06:03:55   (   0.26,-128.22) (   0.20,-128.60)   42.57                80
 09/10/2021   18:02:04   (  -0.27,-128.15) (  -0.25,-128.15)    2.64                80
 09/13/2021   06:03:05   (   0.28,-128.16) (   0.40,-127.77)   45.13                80
 09/14/2021   18:19:14   (  -0.31,-128.08) (   0.64,-132.32)  483.26                80
 09/15/2021   18:01:14   (  -0.29,-128.06) (  -0.46,-127.32)   84.34                80
 09/17/2021   06:17:34   (   0.31,-128.08) (  -0.55,-131.92)  438.52                80
 09/18/2021   05:59:33   (   0.30,-128.05) (   0.55,-126.92)  128.77                80
 09/19/2021   18:15:43   (  -0.32,-127.97) (   0.49,-131.48)  399.96                80
 09/20/2021   17:57:42   (  -0.31,-127.95) (  -0.61,-126.48)  167.55                80