Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2021 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2021   04:24:50   (   0.21,-127.95) (   0.14,-128.17)   26.00                80
 12/11/2021   16:11:21   (  -0.20,-127.89) (  -0.86,-124.78)  353.27                80
 12/12/2021   04:29:32   (   0.20,-127.85) (   0.02,-128.52)   76.81                80
 12/14/2021   16:13:16   (  -0.19,-127.79) (  -0.75,-125.10)  305.35                80
 12/15/2021   04:31:36   (   0.19,-127.75) (  -0.07,-128.87)  128.29                80
 12/17/2021   16:15:11   (  -0.18,-127.68) (  -0.64,-125.42)  256.75                80
 12/18/2021   04:33:39   (   0.18,-127.64) (  -0.18,-129.23)  181.24                80
 12/20/2021   16:17:05   (  -0.17,-127.56) (  -0.58,-125.74)  207.17                80
 12/21/2021   04:35:43   (   0.16,-127.51) (  -0.31,-129.58)  235.63                80