Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 10.  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)
 12/11/2015   05:19:32   (  70.35,  96.93) 12/11/2015   05:18:47  (  70.35,  96.87)    2.34                45
 12/11/2015   06:09:02   ( -70.23, -95.61) 12/11/2015   06:09:29  ( -70.25, -95.66)    3.20                27
 12/13/2015   20:46:19   ( -71.20,  46.47) 12/13/2015   20:45:12  ( -71.25,  43.85)   93.92                67
 12/13/2015   21:36:01   (  70.28,-147.28) 12/13/2015   21:35:40  (  70.31,-147.30)    3.40                21
 12/13/2015   22:25:31   ( -70.17,  20.19) 12/13/2015   22:26:21  ( -70.16,  20.26)    2.74                50
 12/16/2015   13:03:02   ( -70.37, 161.08) 12/16/2015   13:01:49  ( -70.38, 161.06)    1.54                73
 12/16/2015   13:52:29   (  70.26, -31.43) 12/16/2015   13:52:33  (  70.28, -31.47)    2.60                 4
 12/16/2015   14:41:59   ( -70.09, 135.97) 12/16/2015   14:43:12  ( -70.07, 136.16)    7.84                73
 12/19/2015   05:19:29   ( -70.33, -83.08) 12/19/2015   05:18:41  ( -70.35, -83.12)    1.99                48
 12/19/2015   06:08:56   (  70.22,  84.41) 12/19/2015   06:09:25  (  70.25,  84.34)    3.38                29
 12/21/2015   20:46:14   (  71.10,-133.65) 12/21/2015   20:45:06  (  71.16,-135.99)   84.30                68
 12/21/2015   21:35:57   ( -70.29,  32.74) 12/21/2015   21:35:33  ( -70.26,  32.78)    2.88                24
 12/21/2015   22:25:24   (  70.18,-159.77) 12/21/2015   22:26:17  (  70.17,-159.76)    1.18                53
 12/24/2015   13:02:55   (  70.33, -18.94) 12/24/2015   13:01:44  (  70.35, -18.90)    2.18                71
 12/24/2015   13:52:25   ( -70.23, 148.55) 12/24/2015   13:52:26  ( -70.24, 148.58)    1.99                 1
 12/24/2015   14:41:55   (  69.95, -44.21) 12/24/2015   14:43:06  (  69.93, -43.63)   21.94                71