Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 7 9.  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)
 07/09/2018   13:51:19   ( -71.04, 149.80) 07/09/2018   13:50:12  ( -71.09, 147.24)   92.44                67
 07/09/2018   14:41:01   (  70.13, -43.94) 07/09/2018   14:40:40  (  70.13, -43.89)    1.65                21
 07/09/2018   15:30:30   ( -70.07, 123.62) 07/09/2018   15:31:22  ( -70.05, 123.54)    3.26                52
 07/12/2018   06:08:04   ( -70.25, -95.53) 07/12/2018   06:06:51  ( -70.28, -95.65)    5.85                73
 07/12/2018   06:57:32   (  70.09,  71.89) 07/12/2018   06:57:34  (  70.10,  71.93)    2.00                 2
 07/12/2018   07:47:02   ( -69.98,-120.63) 07/12/2018   07:48:15  ( -69.97,-120.55)    3.30                73
 07/14/2018   22:24:35   ( -70.21,  20.29) 07/14/2018   22:23:44  ( -70.19,  20.25)    2.08                51
 07/14/2018   23:14:02   (  70.10,-172.21) 07/14/2018   23:14:28  (  70.07,-172.26)    3.34                26
 07/15/2018   00:03:48   ( -69.11,  -5.92) 07/15/2018   00:04:54  ( -69.14,  -3.58)   93.04                66
 07/17/2018   14:41:06   ( -70.16, 136.11) 07/17/2018   14:40:38  ( -70.16, 136.07)    1.42                28
 07/17/2018   15:30:33   (  70.05, -56.40) 07/17/2018   15:31:22  (  70.05, -56.44)    1.69                49
 07/20/2018   06:08:04   (  70.33,  84.60) 07/20/2018   06:06:52  (  70.39,  84.18)   16.85                72
 07/20/2018   06:57:36   ( -70.12,-108.07) 07/20/2018   06:57:31  ( -70.14,-108.10)    2.47                 5
 07/20/2018   07:47:03   (  70.00,  59.41) 07/20/2018   07:48:15  (  70.02,  59.37)    2.70                72
 07/22/2018   22:24:36   (  70.22,-159.68) 07/22/2018   22:23:43  (  70.21,-159.76)    3.32                53
 07/22/2018   23:14:07   ( -70.07,   7.73) 07/22/2018   23:14:24  ( -70.06,   7.79)    2.51                17