Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2021 6 11.  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)
 06/11/2021   04:37:35   (   0.08,-128.45) (   0.24,-127.80)   74.69                80
 06/12/2021   16:56:26   (  -0.09,-128.49) (   0.79,-132.40)  446.07                80
 06/13/2021   16:38:27   (  -0.09,-128.48) (  -0.33,-127.43)  120.47                80
 06/15/2021   04:57:27   (   0.10,-128.44) (  -0.67,-132.07)  413.25                80
 06/16/2021   04:34:06   (   0.10,-128.42) (   0.39,-127.08)  152.41                80
 06/17/2021   16:52:59   (  -0.11,-128.44) (   0.58,-131.70)  369.74                80
 06/18/2021   16:34:58   (  -0.11,-128.44) (  -0.49,-126.71)  196.41                80
 06/20/2021   04:53:58   (   0.11,-128.39) (  -0.51,-131.35)  337.30                80
 06/21/2021   04:30:38   (   0.11,-128.37) (   0.55,-126.37)  227.78                80
 06/22/2021   16:49:29   (  -0.11,-128.37) (   0.48,-130.97)  296.25                80
 06/23/2021   16:31:30   (  -0.11,-128.36) (  -0.65,-126.00)  268.96                80