Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 1 13.  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)
 01/14/2015   09:45:02   ( -71.00,-148.58) 01/14/2015   09:43:49  ( -71.05,-149.19)   22.85                73
 01/14/2015   10:34:32   (  70.74,  18.66) 01/14/2015   10:34:29  (  70.71,  18.67)    3.08                 3
 01/14/2015   11:24:02   ( -70.62,-173.88) 01/14/2015   11:25:11  ( -70.64,-173.90)    2.55                69
 01/17/2015   02:01:33   ( -70.83, -32.97) 01/17/2015   02:00:34  ( -70.80, -33.00)    3.05                59
 01/17/2015   02:51:01   (  70.67, 134.44) 01/17/2015   02:51:18  (  70.68, 134.51)    2.50                17
 01/17/2015   03:40:41   ( -70.01, -58.89) 01/17/2015   03:41:49  ( -70.03, -57.16)   65.76                68
 01/19/2015   18:18:01   ( -70.79,  82.86) 01/19/2015   18:17:23  ( -70.77,  82.83)    2.42                38
 01/19/2015   19:07:29   (  70.63,-109.73) 01/19/2015   19:08:07  (  70.65,-109.66)    3.12                38
 01/22/2015   09:44:50   (  71.33,  31.96) 01/22/2015   09:43:41  (  71.40,  30.23)   61.77                69
 01/22/2015   10:34:29   ( -70.73,-161.35) 01/22/2015   10:34:12  ( -70.74,-161.35)    2.17                17
 01/22/2015   11:23:56   (  70.62,   6.13) 01/22/2015   11:24:56  (  70.62,   6.15)    0.99                60
 01/25/2015   02:01:25   (  70.80, 147.01) 01/25/2015   02:00:18  (  70.80, 147.02)    0.78                67
 01/25/2015   02:50:55   ( -70.69, -45.52) 01/25/2015   02:50:59  ( -70.67, -45.45)    3.24                 4
 01/25/2015   03:40:27   (  70.31, 121.56) 01/25/2015   03:41:38  (  70.29, 122.46)   33.97                71
 01/27/2015   18:17:51   (  70.79, -97.12) 01/27/2015   18:17:07  (  70.79, -97.18)    2.57                44
 01/27/2015   19:07:21   ( -70.68,  70.35) 01/27/2015   19:07:48  ( -70.66,  70.36)    2.13                27