Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 10.  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)
 08/10/2021   17:51:31   (  -0.07,-128.07) (  -0.63,-125.61)  279.89                80
 08/12/2021   06:13:11   (   0.04,-128.16) (  -0.40,-130.21)  232.48                80
 08/13/2021   05:49:51   (   0.06,-128.18) (   0.70,-125.21)  337.61                80
 08/14/2021   18:11:24   (  -0.03,-128.13) (   0.31,-129.77)  186.63                80
 08/15/2021   17:48:04   (  -0.05,-128.14) (  -0.79,-124.78)  383.65                80
 08/17/2021   06:09:45   (   0.02,-128.23) (  -0.24,-129.37)  129.48                80
 08/18/2021   05:46:26   (   0.04,-128.24) (   0.92,-124.38)  439.67                80
 08/19/2021   18:07:57   (  -0.01,-128.17) (   0.13,-128.93)   86.31                80
 08/20/2021   17:44:38   (  -0.04,-128.18) (  -0.97,-123.94)  483.23                80
 08/22/2021   06:06:18   (   0.00,-128.27) (  -0.06,-128.53)   30.09                80