Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2019 10 10.  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)
 10/10/2019   06:34:08   (   0.30,-127.90) (   0.78,-125.80)  239.38                80
 10/10/2019   18:55:22   (  -0.31,-127.91) (   0.36,-130.95)  346.79                80
 10/12/2019   18:45:53   (  -0.30,-127.97) (  -0.32,-128.01)    4.38                80
 10/14/2019   18:33:42   (  -0.30,-128.04) (  -0.96,-125.05)  339.98                80
 10/15/2019   06:55:05   (   0.31,-128.07) (  -0.16,-130.24)  246.66                80
 10/17/2019   06:40:14   (   0.30,-128.13) (   0.48,-127.29)   95.55                80
 10/17/2019   19:01:30   (  -0.30,-128.12) (   0.61,-132.45)  492.01                80
 10/19/2019   06:28:03   (   0.30,-128.17) (   1.11,-124.33)  436.99                80
 10/19/2019   18:49:19   (  -0.30,-128.16) (  -0.03,-129.49)  150.64                80
 10/21/2019   18:39:48   (  -0.29,-128.20) (  -0.67,-126.54)  190.01                80
 10/22/2019   07:01:12   (   0.29,-128.24) (  -0.44,-131.73)  396.17                80