Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2021 5 20.  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)
 05/22/2021   04:54:04   (   0.01,-128.26) (  -0.53,-130.64)  270.40                80
 05/23/2021   04:30:45   (   0.00,-128.28) (   0.59,-125.66)  298.52                80
 05/24/2021   16:49:37   (  -0.01,-128.37) (   0.38,-130.27)  215.89                80
 05/25/2021   16:31:37   (  -0.00,-128.39) (  -0.67,-125.29)  353.16                80
 05/27/2021   04:50:37   (   0.01,-128.35) (  -0.35,-129.93)  179.72                80
 05/28/2021   04:27:17   (   0.01,-128.36) (   0.77,-124.95)  388.14                80
 05/29/2021   16:46:10   (  -0.02,-128.43) (   0.20,-129.57)  128.39                80
 05/30/2021   16:28:09   (  -0.02,-128.45) (  -0.85,-124.58)  439.95                80
 06/01/2021   04:47:10   (   0.03,-128.41) (  -0.16,-129.22)   92.81                80
 06/02/2021   04:23:50   (   0.03,-128.41) (   0.96,-124.24)  474.95                80