Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 12 8.  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)
 12/09/2021   06:40:09   (   0.16,-127.94) (   0.29,-127.24)   79.59                80
 12/11/2021   06:27:58   (   0.16,-127.88) (   0.95,-124.29)  409.03                80
 12/11/2021   18:51:53   (  -0.14,-127.89) (   0.17,-129.44)  176.30                80
 12/13/2021   18:37:01   (  -0.14,-127.82) (  -0.43,-126.48)  152.97                80
 12/14/2021   07:01:05   (   0.13,-127.79) (  -0.68,-131.67)  441.15                80
 12/15/2021   18:24:49   (  -0.15,-127.76) (  -1.04,-123.52)  481.81                80
 12/16/2021   06:48:53   (   0.13,-127.72) (  -0.07,-128.71)  112.47                80
 12/18/2021   06:34:01   (   0.13,-127.64) (   0.54,-125.75)  215.60                80
 12/18/2021   18:57:56   (  -0.12,-127.64) (   0.58,-130.90)  370.38                80
 12/20/2021   18:45:44   (  -0.11,-127.56) (  -0.04,-127.94)   42.96                80