Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/29/2021   06:39:17   (  -0.04,-127.47) (  -0.00,-127.19)   30.84                80
 05/01/2021   06:27:04   (  -0.04,-127.37) (   0.60,-124.23)  356.96                80
 05/01/2021   18:48:19   (   0.03,-127.43) (   0.45,-129.40)  223.82                80
 05/03/2021   18:38:46   (   0.03,-127.33) (  -0.16,-126.44)  102.14                80
 05/04/2021   07:00:10   (  -0.02,-127.24) (  -0.94,-131.63)  498.60                80
 05/05/2021   18:26:33   (   0.03,-127.24) (  -0.77,-123.47)  428.27                80
 05/06/2021   06:47:57   (  -0.02,-127.15) (  -0.32,-128.67)  172.63                80
 05/08/2021   06:33:03   (  -0.03,-127.05) (   0.23,-125.70)  153.39                80
 05/08/2021   18:54:19   (   0.02,-127.09) (   0.81,-130.86)  428.91                80
 05/10/2021   06:20:50   (  -0.03,-126.95) (   0.86,-122.74)  479.05                80
 05/10/2021   18:42:06   (   0.02,-126.99) (   0.19,-127.90)  103.18                80
 05/12/2021   18:32:32   (   0.03,-126.89) (  -0.37,-124.93)  221.93                80