Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2021 6 18.  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)
 06/18/2021   16:34:58   (  -0.11,-128.45) (  -0.51,-126.71)  198.18                80
 06/20/2021   04:53:58   (   0.11,-128.40) (  -0.55,-131.34)  335.79                80
 06/21/2021   04:30:38   (   0.11,-128.38) (   0.57,-126.37)  229.54                80
 06/22/2021   16:49:30   (  -0.12,-128.40) (   0.45,-130.97)  293.30                80
 06/23/2021   16:31:30   (  -0.12,-128.38) (  -0.67,-126.00)  272.19                80
 06/25/2021   04:50:29   (   0.12,-128.32) (  -0.38,-130.63)  262.55                80
 06/26/2021   04:27:09   (   0.13,-128.30) (   0.68,-125.65)  301.87                80
 06/27/2021   16:46:01   (  -0.13,-128.30) (   0.28,-130.26)  222.60                80
 06/28/2021   16:28:01   (  -0.14,-128.29) (  -0.78,-125.27)  342.55                80
 06/30/2021   04:47:01   (   0.14,-128.23) (  -0.21,-129.92)  191.54                80
 07/01/2021   04:23:41   (   0.14,-128.21) (   0.86,-124.93)  372.91                80