Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 5 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)
 05/11/2016   05:18:45   ( -71.14, -81.85) 05/11/2016   05:17:38  ( -71.19, -84.50)   95.30                67
 05/11/2016   06:08:27   (  70.22,  84.41) 05/11/2016   06:08:06  (  70.23,  84.38)    1.52                21
 05/11/2016   06:57:57   ( -70.10,-108.13) 05/11/2016   06:58:47  ( -70.10,-108.10)    1.30                50
 05/13/2016   21:35:28   ( -70.27,  32.73) 05/13/2016   21:34:16  ( -70.28,  32.76)    1.76                72
 05/13/2016   22:24:55   (  70.16,-159.78) 05/13/2016   22:25:00  (  70.16,-159.74)    1.62                 5
 05/13/2016   23:14:27   ( -69.94,   7.54) 05/13/2016   23:15:39  ( -69.92,   7.94)   15.55                72
 05/16/2016   13:51:55   ( -70.27, 148.62) 05/16/2016   13:51:11  ( -70.26, 148.55)    2.32                44
 05/16/2016   14:41:22   (  70.16, -43.90) 05/16/2016   14:41:55  (  70.14, -43.95)    2.54                33
 05/19/2016   05:18:43   (  70.80,  97.67) 05/19/2016   05:17:33  (  70.86,  96.05)   59.62                70
 05/19/2016   06:08:22   ( -70.20, -95.59) 05/19/2016   06:08:04  ( -70.20, -95.57)    0.62                18
 05/19/2016   06:57:49   (  70.08,  71.90) 05/19/2016   06:58:48  (  70.07,  71.92)    1.50                59
 05/21/2016   21:35:19   (  70.28,-147.21) 05/21/2016   21:34:17  (  70.27,-147.24)    1.73                62
 05/21/2016   22:24:49   ( -70.18,  20.28) 05/21/2016   22:24:59  ( -70.18,  20.21)    2.55                10
 05/21/2016   23:14:25   (  69.57,-172.93) 05/21/2016   23:15:34  (  69.59,-171.58)   52.26                69
 05/24/2016   13:51:47   (  70.20, -31.43) 05/24/2016   13:51:11  (  70.21, -31.38)    2.65                36
 05/24/2016   14:41:17   ( -70.10, 136.06) 05/24/2016   14:41:53  ( -70.12, 136.08)    2.79                36