Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2019 12 22.  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) (   0.90,-124.27)  433.62                80
 12/22/2019   18:51:47   (  -0.08,-128.06) (   0.22,-129.42)  154.69                80
 12/24/2019   18:36:56   (  -0.09,-128.11) (  -0.46,-126.47)  187.55                80
 12/25/2019   07:01:00   (   0.07,-128.17) (  -0.65,-131.66)  396.95                80
 12/27/2019   06:48:48   (   0.07,-128.22) (  -0.03,-128.70)   55.21                80
 12/29/2019   06:33:56   (   0.07,-128.26) (   0.59,-125.74)  286.33                80
 12/29/2019   18:57:51   (  -0.06,-128.24) (   0.53,-130.89)  302.55                80
 12/31/2019   18:43:00   (  -0.06,-128.28) (  -0.16,-127.95)   38.98                80
 01/02/2020   18:30:48   (  -0.06,-128.33) (  -0.79,-124.99)  379.98                80
 01/03/2020   06:54:52   (   0.05,-128.38) (  -0.31,-130.18)  204.63                80