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   23:15:04   ( -70.09,   7.70) 01/17/2020   23:14:05  ( -70.07,   7.77)    3.40                59
 01/18/2020   00:04:31   (  69.99, 175.19) 01/18/2020   00:04:49  (  69.97, 175.24)    2.94                18
 01/18/2020   00:54:12   ( -69.27, -18.15) 01/18/2020   00:55:20  ( -69.29, -16.45)   66.65                68
 01/20/2020   15:31:32   ( -70.06, 123.53) 01/20/2020   15:30:57  ( -70.07, 123.55)    1.76                35
 01/20/2020   16:20:59   (  69.95, -68.98) 01/20/2020   16:21:41  (  69.97, -68.98)    2.22                42
 01/23/2020   06:58:25   (  70.45,  72.35) 01/23/2020   06:57:14  (  70.49,  71.35)   37.26                71
 01/23/2020   07:48:01   ( -70.02,-120.64) 01/23/2020   07:47:49  ( -70.02,-120.60)    1.69                12
 01/23/2020   08:37:28   (  69.91,  46.84) 01/23/2020   08:38:33  (  69.92,  46.87)    1.75                65
 01/25/2020   23:14:59   (  70.13,-172.23) 01/25/2020   23:14:00  (  70.13,-172.30)    2.57                59
 01/26/2020   00:04:30   ( -69.98,  -4.82) 01/26/2020   00:04:41  ( -69.98,  -4.75)    2.79                11
 01/26/2020   00:54:06   (  69.37, 161.99) 01/26/2020   00:55:15  (  69.35, 163.49)   58.86                69
 01/28/2020   15:31:28   (  70.08, -56.42) 01/28/2020   15:30:52  (  70.09, -56.46)    1.45                36
 01/28/2020   16:20:58   ( -69.99, 111.07) 01/28/2020   16:21:34  ( -69.99, 111.02)    1.96                36