Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2019 6 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)
 06/20/2019   06:33:34   (   0.13,-128.16) (   0.65,-125.78)  270.16                80
 06/20/2019   18:57:29   (  -0.11,-128.19) (   0.50,-130.93)  311.86                80
 06/22/2019   18:42:39   (  -0.12,-128.14) (  -0.17,-127.98)   18.82                80
 06/24/2019   18:30:28   (  -0.13,-128.09) (  -0.78,-125.02)  349.07                80
 06/25/2019   06:54:32   (   0.10,-128.03) (  -0.35,-130.21)  247.20                80
 06/27/2019   06:39:41   (   0.11,-127.97) (   0.26,-127.25)   82.57                80
 06/29/2019   06:27:30   (   0.11,-127.91) (   0.88,-124.29)  411.79                80
 06/29/2019   18:51:25   (  -0.09,-127.93) (   0.21,-129.44)  171.27                80
 07/01/2019   18:36:35   (  -0.10,-127.86) (  -0.41,-126.48)  156.98                80
 07/02/2019   07:00:37   (   0.07,-127.80) (  -0.77,-131.66)  439.07                80
 07/03/2019   18:24:24   (  -0.11,-127.78) (  -1.02,-123.52)  484.35                80