Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 25.  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)
 12/25/2017   14:16:12   ( -70.19, 142.23) 12/25/2017   14:17:22  ( -70.18, 142.22)    1.13                70
 12/25/2017   15:06:54   (  70.08, -50.29) 12/25/2017   15:06:49  (  70.08, -50.28)    0.44                 5
 12/25/2017   15:57:33   ( -69.84, 117.38) 12/25/2017   15:56:20  ( -69.91, 117.11)   12.66                73
 12/28/2017   07:22:21   (  70.14,  65.76) 12/28/2017   07:23:16  (  70.15,  65.70)    2.93                55
 12/28/2017   08:13:03   ( -70.05,-126.79) 12/28/2017   08:12:46  ( -70.04,-126.82)    1.88                17
 12/28/2017   09:03:32   (  69.26,  41.69) 12/28/2017   09:02:24  (  69.33,  39.85)   72.80                68
 12/31/2017   00:28:31   ( -70.15, -10.81) 12/31/2017   00:29:12  ( -70.16, -10.77)    1.89                41
 12/31/2017   01:19:13   (  70.05, 156.66) 12/31/2017   01:18:39  (  70.06, 156.73)    2.53                34
 01/02/2018   17:34:39   (  70.11, -87.28) 01/02/2018   17:35:05  (  70.12, -87.30)    1.55                26
 01/02/2018   18:25:21   ( -70.01,  80.18) 01/02/2018   18:24:35  ( -70.01,  80.18)    0.44                46
 01/05/2018   09:50:15   (  70.63,  28.03) 01/05/2018   09:51:25  (  70.56,  29.22)   44.56                70
 01/05/2018   10:40:49   ( -70.12,-163.84) 01/05/2018   10:41:01  ( -70.12,-163.78)    2.16                12
 01/05/2018   11:31:30   (  69.97,   3.70) 01/05/2018   11:30:29  (  69.96,   3.63)    3.30                61
 01/08/2018   02:56:16   ( -70.16, -47.77) 01/08/2018   02:57:28  ( -70.17, -47.83)    2.39                72
 01/08/2018   03:46:58   (  70.07, 119.69) 01/08/2018   03:46:55  (  70.06, 119.66)    1.80                 3