Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2021   06:12:39   (   0.01,-128.17) (  -0.45,-130.21)  232.70                80
 05/18/2021   05:49:20   (   0.01,-128.19) (   0.66,-125.21)  338.26                80
 05/19/2021   18:08:14   (  -0.02,-128.25) (   0.31,-129.79)  174.48                80
 05/20/2021   17:50:15   (  -0.02,-128.28) (  -0.81,-124.79)  397.06                80
 05/22/2021   06:09:17   (   0.02,-128.28) (  -0.21,-129.40)  127.33                80
 05/23/2021   05:45:59   (   0.01,-128.29) (   0.91,-124.40)  443.26                80
 05/24/2021   18:04:51   (  -0.02,-128.34) (   0.12,-128.96)   70.96                80
 05/25/2021   17:46:53   (  -0.01,-128.36) (  -1.00,-123.97)  499.86                80
 05/27/2021   06:05:55   (   0.02,-128.35) (  -0.01,-128.57)   25.20                80
 05/29/2021   18:04:09   (  -0.03,-128.39) (  -0.07,-128.14)   27.91                80