Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 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)
 12/22/2017   21:10:20   (  70.17,-141.29) 12/22/2017   21:11:27  (  70.19,-141.29)    1.76                67
 12/22/2017   22:01:00   ( -70.07,  26.19) 12/22/2017   22:00:57  ( -70.08,  26.19)    0.57                 3
 12/22/2017   22:51:39   (  69.81,-166.10) 12/22/2017   22:50:26  (  69.86,-166.47)   15.02                73
 12/25/2017   15:06:04   (  70.16, -50.20) 12/25/2017   15:06:49  (  70.17, -50.16)    2.08                45
 12/25/2017   15:56:44   ( -70.05, 117.28) 12/25/2017   15:56:19  ( -70.06, 117.32)    1.67                25
 12/25/2017   16:47:08   (  69.00, -73.88) 12/25/2017   16:46:02  (  69.07, -76.38)   99.75                66
 12/28/2017   09:01:49   (  70.14,  40.88) 12/28/2017   09:02:12  (  70.14,  40.96)    2.68                23
 12/28/2017   09:52:29   ( -70.03,-151.62) 12/28/2017   09:51:42  ( -70.03,-151.56)    2.41                47
 12/31/2017   02:06:55   ( -70.36, -35.72) 12/31/2017   02:08:07  ( -70.27, -35.34)   17.17                72
 12/31/2017   02:57:33   (  70.07, 132.06) 12/31/2017   02:57:36  (  70.05, 131.98)    3.22                 3
 12/31/2017   03:48:14   ( -70.00, -60.52) 12/31/2017   03:47:05  ( -70.00, -60.45)    2.78                69
 01/02/2018   20:02:37   ( -70.18,  55.63) 01/02/2018   20:03:31  ( -70.18,  55.68)    1.91                54
 01/02/2018   20:53:18   (  70.04,-136.85) 01/02/2018   20:52:58  (  70.06,-136.84)    2.31                20
 01/02/2018   21:43:46   ( -69.34,  31.51) 01/02/2018   21:42:37  ( -69.41,  29.90)   63.40                69