Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 3.  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)
 05/03/2021   05:59:24   (  -0.04,-127.70) (  -0.02,-127.66)    4.77                80
 05/05/2021   18:00:19   (   0.03,-127.86) (  -0.10,-127.23)   70.97                80
 05/07/2021   06:19:21   (  -0.02,-127.86) (  -0.91,-131.83)  452.64                80
 05/08/2021   05:56:03   (  -0.03,-127.90) (   0.20,-126.84)  120.16                80
 05/09/2021   18:14:56   (   0.03,-128.01) (   0.79,-131.41)  387.97                80
 05/10/2021   17:56:58   (   0.03,-128.05) (  -0.33,-126.42)  185.30                80
 05/12/2021   06:16:00   (  -0.03,-128.05) (  -0.69,-131.02)  338.46                80
 05/13/2021   05:52:41   (  -0.03,-128.08) (   0.43,-126.03)  233.62                80
 05/14/2021   18:11:35   (   0.02,-128.17) (   0.55,-130.60)  276.42                80
 05/15/2021   17:53:36   (   0.03,-128.20) (  -0.56,-125.61)  295.97                80