Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 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)
 12/10/2017   22:25:33   (  70.18,-159.81) 12/10/2017   22:24:22  (  70.18,-159.87)    1.96                71
 12/10/2017   23:15:03   ( -70.06,   7.66) 12/10/2017   23:15:04  ( -70.08,   7.60)    2.74                 1
 12/11/2017   00:04:33   (  69.80, 174.93) 12/11/2017   00:05:45  (  69.81, 175.31)   14.81                72
 12/13/2017   14:42:03   (  70.11, -44.03) 12/13/2017   14:41:15  (  70.12, -44.01)    1.19                48
 12/13/2017   15:31:33   ( -70.00, 123.45) 12/13/2017   15:31:57  ( -70.02, 123.47)    1.89                24
 12/16/2017   06:58:31   (  70.10,  71.83) 12/16/2017   06:58:08  (  70.12,  71.77)    3.33                23
 12/16/2017   07:48:01   ( -69.99,-120.68) 12/16/2017   07:48:49  ( -69.96,-120.68)    3.34                48
 12/18/2017   22:25:32   ( -70.25,  20.28) 12/18/2017   22:24:19  ( -70.27,  20.00)   10.85                73
 12/18/2017   23:15:00   (  70.08,-172.31) 12/18/2017   23:15:01  (  70.07,-172.38)    2.87                 1
 12/19/2017   00:04:30   ( -69.98,  -4.83) 12/19/2017   00:05:43  ( -69.96,  -4.90)    3.34                73
 12/21/2017   14:42:03   ( -70.12, 135.97) 12/21/2017   14:41:10  ( -70.11, 136.01)    1.50                53
 12/21/2017   15:31:30   (  70.00, -56.54) 12/21/2017   15:31:54  (  70.02, -56.53)    1.92                24