Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 12 19.  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)
 12/19/2020   18:33:31   (   0.19,-128.23) (  -0.50,-124.95)  372.82                80
 12/20/2020   06:52:15   (  -0.17,-128.25) (  -0.55,-130.15)  216.29                80
 12/22/2020   06:42:43   (  -0.18,-128.26) (   0.06,-127.19)  121.72                80
 12/22/2020   19:01:19   (   0.15,-128.26) (   1.00,-132.36)  465.79                80
 12/24/2020   06:30:31   (  -0.18,-128.27) (   0.67,-124.23)  459.47                80
 12/24/2020   18:49:07   (   0.16,-128.27) (   0.39,-129.40)  128.28                80
 12/26/2020   18:39:35   (   0.16,-128.27) (  -0.23,-126.44)  208.62                80
 12/27/2020   06:58:20   (  -0.13,-128.28) (  -0.82,-131.64)  381.55                80
 12/29/2020   06:46:08   (  -0.14,-128.27) (  -0.19,-128.68)   45.46                80
 12/31/2020   06:36:35   (  -0.14,-128.27) (   0.37,-125.71)  290.19                80
 12/31/2020   18:55:11   (   0.12,-128.26) (   0.69,-130.87)  297.65                80