Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 1.  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)
 01/01/2018   07:48:02   ( -69.99,-120.71) 01/01/2018   07:48:41  ( -69.97,-120.67)    2.97                39
 01/03/2018   22:25:28   ( -70.49,  20.61) 01/03/2018   22:24:16  ( -70.55,  19.57)   39.29                72
 01/03/2018   23:15:01   (  70.06,-172.37) 01/03/2018   23:14:53  (  70.08,-172.38)    1.65                 8
 01/04/2018   00:04:31   ( -69.95,  -4.89) 01/04/2018   00:05:34  ( -69.93,  -4.84)    2.97                63
 01/06/2018   14:42:02   ( -70.17, 136.02) 01/06/2018   14:41:02  ( -70.15, 135.98)    2.89                60
 01/06/2018   15:31:30   (  70.01, -56.56) 01/06/2018   15:31:46  (  70.04, -56.55)    3.47                16
 01/06/2018   16:21:09   ( -69.40, 110.24) 01/06/2018   16:22:18  ( -69.41, 111.69)   56.71                69
 01/09/2018   06:58:31   ( -70.11,-108.18) 01/09/2018   06:57:55  ( -70.11,-108.19)    0.58                36
 01/09/2018   07:47:58   (  70.00,  59.32) 01/09/2018   07:48:39  (  70.00,  59.28)    1.26                41
 01/11/2018   22:25:23   (  70.49,-159.38) 01/11/2018   22:24:12  (  70.54,-160.41)   38.50                71
 01/11/2018   23:14:59   ( -70.05,   7.62) 01/11/2018   23:14:47  ( -70.07,   7.64)    2.57                12
 01/12/2018   00:04:26   (  69.94, 175.11) 01/12/2018   00:05:31  (  69.97, 175.11)    3.19                65
 01/14/2018   14:41:57   (  70.14, -44.00) 01/14/2018   14:40:58  (  70.14, -44.00)    0.46                59
 01/14/2018   15:31:27   ( -70.04, 123.49) 01/14/2018   15:31:40  ( -70.04, 123.47)    0.72                13
 01/14/2018   16:21:05   (  69.32, -69.85) 01/14/2018   16:22:13  (  69.35, -68.21)   64.51                68