Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 5.  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)
 12/05/2017   14:42:04   ( -70.13, 136.00) 12/05/2017   14:41:17  ( -70.15, 135.96)    2.40                47
 12/05/2017   15:31:31   (  70.03, -56.50) 12/05/2017   15:32:01  (  70.04, -56.57)    2.74                30
 12/08/2017   06:08:50   (  70.95,  85.47) 12/08/2017   06:07:43  (  70.97,  83.09)   86.36                67
 12/08/2017   06:58:34   ( -70.08,-108.20) 12/08/2017   06:58:10  ( -70.08,-108.17)    1.12                24
 12/08/2017   07:48:01   (  69.97,  59.30) 12/08/2017   07:48:54  (  69.98,  59.30)    0.34                53
 12/10/2017   22:25:33   (  70.18,-159.80) 12/10/2017   22:24:22  (  70.17,-159.86)    2.30                71
 12/10/2017   23:15:03   ( -70.08,   7.68) 12/10/2017   23:15:04  ( -70.07,   7.62)    2.34                 1
 12/11/2017   00:04:33   (  69.80, 174.94) 12/11/2017   00:05:45  (  69.81, 175.32)   14.66                72
 12/13/2017   14:42:02   (  70.12, -44.02) 12/13/2017   14:41:14  (  70.11, -44.00)    0.89                48
 12/13/2017   15:31:32   ( -70.01, 123.47) 12/13/2017   15:31:56  ( -70.01, 123.48)    0.78                24
 12/16/2017   06:58:31   (  70.10,  71.84) 12/16/2017   06:58:08  (  70.11,  71.78)    2.49                23
 12/16/2017   07:48:01   ( -70.00,-120.67) 12/16/2017   07:48:50  ( -70.00,-120.74)    2.51                49
 12/18/2017   22:25:33   ( -70.20,  20.21) 12/18/2017   22:24:19  ( -70.26,  20.02)    9.65                74
 12/18/2017   23:15:00   (  70.08,-172.31) 12/18/2017   23:15:01  (  70.06,-172.36)    3.25                 1
 12/19/2017   00:04:31   ( -69.93,  -4.89) 12/19/2017   00:05:43  ( -69.95,  -4.88)    2.30                72