Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 12.  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)
 05/12/2021   06:16:00   (  -0.00,-128.03) (  -0.68,-131.02)  340.78                80
 05/13/2021   05:52:42   (  -0.01,-128.06) (   0.43,-126.03)  230.94                80
 05/14/2021   18:11:35   (   0.00,-128.14) (   0.55,-130.60)  280.19                80
 05/15/2021   17:53:36   (   0.01,-128.17) (  -0.57,-125.61)  291.79                80
 05/17/2021   06:12:39   (   0.00,-128.17) (  -0.45,-130.21)  232.74                80
 05/18/2021   05:49:20   (  -0.00,-128.18) (   0.67,-125.22)  338.18                80
 05/19/2021   18:08:14   (  -0.01,-128.25) (   0.31,-129.79)  174.67                80
 05/20/2021   17:50:15   (  -0.00,-128.27) (  -0.81,-124.80)  396.86                80
 05/22/2021   06:09:16   (   0.01,-128.27) (  -0.26,-129.39)  127.61                80
 05/23/2021   05:45:58   (   0.00,-128.28) (   0.86,-124.39)  442.94                80
 05/24/2021   18:04:51   (  -0.01,-128.34) (   0.12,-128.97)   71.39                80
 05/25/2021   17:46:53   (  -0.00,-128.35) (  -1.00,-123.97)  499.44                80