Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 1.  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)
 10/01/2021   18:15:39   (  -0.34,-127.71) (   0.52,-131.43)  425.08                80
 10/02/2021   17:57:39   (  -0.33,-127.74) (  -0.60,-126.44)  148.47                80
 10/04/2021   06:14:01   (   0.35,-127.80) (  -0.38,-131.04)  369.70                80
 10/05/2021   05:56:01   (   0.34,-127.83) (   0.74,-126.05)  203.43                80
 10/06/2021   18:12:12   (  -0.35,-127.88) (   0.27,-130.61)  311.02                80
 10/07/2021   17:54:13   (  -0.34,-127.91) (  -0.85,-125.61)  261.90                80
 10/09/2021   06:10:34   (   0.35,-127.96) (  -0.13,-130.22)  257.04                80
 10/10/2021   05:52:34   (   0.34,-127.99) (   0.93,-125.21)  315.27                80
 10/11/2021   18:08:46   (  -0.35,-128.02) (   0.02,-129.79)  200.75                80
 10/12/2021   17:50:46   (  -0.34,-128.04) (  -1.04,-124.78)  371.25                80
 10/14/2021   06:07:07   (   0.35,-128.08) (   0.08,-129.39)  148.59                80