Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 1 13.  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)
 01/14/2021   06:46:02   (  -0.06,-128.06) (  -0.16,-128.67)   69.02                80
 01/16/2021   06:36:29   (  -0.07,-128.02) (   0.43,-125.70)  263.45                80
 01/16/2021   18:55:05   (   0.03,-128.03) (   0.63,-130.87)  322.15                80
 01/18/2021   18:45:00   (   0.04,-127.99) (   0.04,-127.90)   10.24                48
 01/20/2021   18:33:20   (   0.05,-127.95) (  -0.62,-124.95)  342.08                80
 01/21/2021   06:52:04   (  -0.01,-127.91) (  -0.47,-130.14)  253.25                80
 01/23/2021   06:42:31   (  -0.01,-127.86) (   0.13,-127.17)   77.95                80
 01/25/2021   06:30:18   (  -0.02,-127.80) (   0.73,-124.21)  408.61                80
 01/25/2021   18:48:53   (  -0.02,-127.82) (   0.32,-129.37)  177.05                80