Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2019 12 21.  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)
 12/22/2019   06:27:52   (   0.10,-128.08) (   0.91,-124.27)  433.63                80
 12/22/2019   18:51:47   (  -0.09,-128.06) (   0.21,-129.42)  154.60                80
 12/24/2019   18:36:56   (  -0.09,-128.12) (  -0.47,-126.47)  187.72                80
 12/25/2019   07:01:00   (   0.07,-128.17) (  -0.64,-131.66)  396.82                80
 12/27/2019   06:48:48   (   0.07,-128.22) (  -0.02,-128.70)   55.00                80
 12/29/2019   06:33:56   (   0.07,-128.27) (   0.60,-125.74)  286.61                80
 12/29/2019   18:57:51   (  -0.06,-128.24) (   0.52,-130.89)  302.21                80
 12/31/2019   18:42:59   (  -0.06,-128.29) (  -0.11,-127.94)   39.32                80
 01/02/2020   18:30:47   (  -0.06,-128.33) (  -0.74,-124.98)  380.47                80
 01/03/2020   06:54:51   (   0.05,-128.38) (  -0.36,-130.17)  204.14                80