Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 1 20.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2018   06:32:25   (  70.44,  77.73) 01/21/2018   06:33:36  (  70.33,  78.32)   25.42                71
 01/21/2018   07:23:02   ( -70.09,-114.39) 01/21/2018   07:23:08  ( -70.10,-114.37)    1.68                 6
 01/21/2018   08:13:46   (  69.97,  53.09) 01/21/2018   08:12:36  (  69.94,  53.06)    3.31                70
 01/23/2018   22:49:15   (  70.17,-166.07) 01/23/2018   22:50:06  (  70.19,-166.00)    3.45                51
 01/23/2018   23:39:56   ( -70.02,   1.47) 01/23/2018   23:39:37  ( -70.02,   1.40)    2.92                19
 01/24/2018   00:30:25   (  69.11, 170.10) 01/24/2018   00:29:18  (  69.14, 167.85)   88.93                67
 01/26/2018   15:06:08   (  70.11, -50.21) 01/26/2018   15:06:34  (  70.10, -50.24)    1.89                26
 01/26/2018   15:56:50   ( -70.01, 117.25) 01/26/2018   15:56:04  ( -69.98, 117.23)    3.11                46
 01/29/2018   06:32:21   ( -70.31,-102.07) 01/29/2018   06:33:33  ( -70.27,-101.75)   12.59                72
 01/29/2018   07:23:02   (  70.05,  65.65) 01/29/2018   07:23:02  (  70.05,  65.58)    2.64                 0
 01/29/2018   08:13:44   ( -69.95,-126.89) 01/29/2018   08:12:32  ( -69.94,-126.94)    2.08                72
 01/31/2018   22:49:13   ( -70.14,  13.96) 01/31/2018   22:50:03  ( -70.12,  13.91)    3.35                50
 01/31/2018   23:39:57   (  70.04,-178.57) 01/31/2018   23:39:29  (  70.06,-178.53)    2.97                28
 02/01/2018   00:30:21   ( -68.98,  -9.73) 02/01/2018   00:29:15  ( -69.07, -12.22)   99.64                66
 02/03/2018   14:15:41   (  71.02, -39.01) 02/03/2018   14:16:47  (  70.94, -36.62)   87.26                66
 02/03/2018   15:06:08   ( -70.13, 129.74) 02/03/2018   15:06:30  ( -70.12, 129.80)    2.65                22
 02/03/2018   15:56:51   (  69.98, -62.72) 02/03/2018   15:55:57  (  70.01, -62.72)    3.14                54