Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 12 20.  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)
 12/20/2021   18:45:44   (  -0.11,-127.85) (  -0.08,-127.95)   11.71                80
 12/22/2021   18:30:53   (  -0.11,-127.91) (  -0.71,-124.99)  331.37                80
 12/23/2021   06:54:56   (   0.09,-127.92) (  -0.39,-130.18)  257.24                80
 12/25/2021   06:40:04   (   0.09,-127.98) (   0.24,-127.22)   85.40                80
 12/25/2021   19:03:59   (  -0.08,-127.99) (   0.87,-132.37)  498.81                80
 12/27/2021   06:27:52   (   0.09,-128.03) (   0.89,-124.27)  427.71                80
 12/27/2021   18:51:47   (  -0.08,-128.04) (   0.23,-129.42)  156.61                80
 12/29/2021   18:36:55   (  -0.08,-128.09) (  -0.42,-126.46)  184.90                80
 12/30/2021   07:00:59   (   0.07,-128.10) (  -0.67,-131.65)  403.88                80
 01/01/2022   06:48:46   (   0.07,-128.14) (  -0.07,-128.69)   63.56                80