Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 12 29.  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)
 12/29/2016   06:08:57   ( -70.93, -94.59) 12/29/2016   06:07:50  ( -71.00, -96.98)   86.87                67
 12/29/2016   06:58:38   (  70.07,  71.77) 12/29/2016   06:58:18  (  70.05,  71.85)    3.46                20
 12/29/2016   07:48:08   ( -69.95,-120.76) 12/29/2016   07:49:00  ( -69.96,-120.69)    2.57                52
 12/31/2016   22:25:40   ( -70.16,  20.14) 12/31/2016   22:24:28  ( -70.14,  20.17)    2.16                72
 12/31/2016   23:15:07   (  70.06,-172.37) 12/31/2016   23:15:12  (  70.03,-172.35)    2.53                 5
 01/01/2017   00:04:39   ( -69.84,  -5.04) 01/01/2017   00:05:52  ( -69.83,  -4.74)   11.72                73
 01/03/2017   14:42:08   ( -70.15, 136.00) 01/03/2017   14:41:21  ( -70.13, 135.97)    2.58                47
 01/03/2017   15:31:35   (  70.04, -56.51) 01/03/2017   15:32:05  (  70.02, -56.56)    3.11                30
 01/06/2017   06:08:55   (  70.89,  85.35) 01/06/2017   06:07:47  (  70.95,  83.11)   81.76                68
 01/06/2017   06:58:38   ( -70.08,-108.22) 01/06/2017   06:58:14  ( -70.06,-108.16)    2.91                24
 01/06/2017   07:48:05   (  69.97,  59.26) 01/06/2017   07:48:58  (  69.95,  59.31)    2.36                53
 01/08/2017   22:25:37   (  70.16,-159.86) 01/08/2017   22:24:26  (  70.15,-159.83)    1.59                71
 01/08/2017   23:15:07   ( -70.05,   7.62) 01/08/2017   23:15:08  ( -70.05,   7.63)    0.52                 1
 01/09/2017   00:04:37   (  69.77, 174.88) 01/09/2017   00:05:49  (  69.78, 175.34)   17.73                72
 01/11/2017   14:42:06   (  70.13, -44.03) 01/11/2017   14:41:20  (  70.14, -44.05)    1.43                46
 01/11/2017   15:31:36   ( -70.03, 123.47) 01/11/2017   15:32:02  ( -70.04, 123.42)    2.41                26