Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 1 17.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2020   23:15:03   ( -70.12,   7.73) 01/17/2020   23:14:05  ( -70.11,   7.72)    1.08                58
 01/18/2020   00:04:30   (  70.01, 175.22) 01/18/2020   00:04:49  (  70.00, 175.20)    1.73                19
 01/18/2020   00:54:11   ( -69.29, -18.12) 01/18/2020   00:55:19  ( -69.27, -16.42)   66.69                68
 01/20/2020   15:31:32   ( -70.08, 123.56) 01/20/2020   15:30:57  ( -70.05, 123.58)    3.32                35
 01/20/2020   16:20:59   (  69.97, -68.95) 01/20/2020   16:21:41  (  69.95, -68.95)    2.91                42
 01/23/2020   06:58:26   (  70.42,  72.30) 01/23/2020   06:57:15  (  70.52,  71.31)   38.73                71
 01/23/2020   07:48:01   ( -70.05,-120.61) 01/23/2020   07:47:50  ( -70.06,-120.65)    1.82                11
 01/23/2020   08:37:28   (  69.93,  46.88) 01/23/2020   08:38:34  (  69.95,  46.82)    3.09                66
 01/25/2020   23:14:59   (  70.11,-172.28) 01/25/2020   23:13:59  (  70.11,-172.27)    0.67                60
 01/26/2020   00:04:29   ( -70.00,  -4.79) 01/26/2020   00:04:41  ( -70.01,  -4.80)    0.60                12
 01/26/2020   00:54:06   (  69.34, 161.95) 01/26/2020   00:55:14  (  69.32, 163.52)   61.77                68
 01/28/2020   15:31:28   (  70.06, -56.47) 01/28/2020   15:30:51  (  70.07, -56.42)    2.03                37
 01/28/2020   16:20:58   ( -69.96, 111.03) 01/28/2020   16:21:33  ( -69.96, 111.05)    1.14                35
 01/31/2020   06:58:20   ( -70.67,-107.34) 01/31/2020   06:57:10  ( -70.70,-108.95)   59.56                70
 01/31/2020   07:47:56   (  70.06,  59.42) 01/31/2020   07:47:43  (  70.03,  59.42)    3.51                13
 01/31/2020   08:37:27   ( -69.91,-133.16) 01/31/2020   08:38:25  ( -69.92,-133.11)    2.77                58