Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2021 1 13.  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)
 01/13/2021   17:00:20   (   0.23,-128.08) (   0.61,-129.74)  189.75                80
 01/14/2021   16:42:20   (   0.26,-128.06) (  -0.49,-124.76)  375.58                80
 01/16/2021   04:58:41   (  -0.23,-128.03) (  -0.55,-129.40)  156.08                80
 01/17/2021   04:40:41   (  -0.25,-128.01) (   0.56,-124.42)  409.60                80
 01/18/2021   16:56:53   (   0.22,-127.98) (   0.43,-129.03)  118.49                80
 01/19/2021   16:38:53   (   0.25,-127.96) (  -0.62,-124.04)  446.69                80
 01/21/2021   04:55:14   (  -0.21,-127.92) (  -0.35,-128.68)   85.92                80
 01/22/2021   04:37:14   (  -0.23,-127.90) (   0.69,-123.69)  479.32                80
 01/23/2021   16:53:26   (   0.20,-127.86) (   0.29,-128.30)   49.38                80
 01/26/2021   04:51:47   (  -0.19,-127.78) (  -0.21,-127.96)   19.25                80