Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 1 11.  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)
 01/11/2017   14:42:05   (  70.13, -44.03) 01/11/2017   14:41:19  (  70.14, -44.04)    1.09                46
 01/11/2017   15:31:35   ( -70.01, 123.44) 01/11/2017   15:32:00  ( -70.00, 123.48)    1.88                25
 01/14/2017   06:08:50   ( -71.06, -94.39) 01/14/2017   06:07:44  ( -71.09, -97.12)   98.52                66
 01/14/2017   06:58:33   (  70.09,  71.80) 01/14/2017   06:58:11  (  70.08,  71.82)    1.55                22
 01/14/2017   07:48:03   ( -69.98,-120.73) 01/14/2017   07:48:53  ( -69.99,-120.74)    1.94                50
 01/16/2017   22:25:34   ( -70.21,  20.21) 01/16/2017   22:24:21  ( -70.19,  20.10)    4.15                73
 01/16/2017   23:15:02   (  70.05,-172.38) 01/16/2017   23:15:05  (  70.07,-172.40)    3.11                 3
 01/17/2017   00:04:33   ( -69.88,  -4.98) 01/17/2017   00:05:45  ( -69.88,  -4.80)    6.79                72
 01/19/2017   14:42:04   ( -70.11, 135.94) 01/19/2017   14:41:14  ( -70.14, 135.96)    3.26                50
 01/19/2017   15:31:31   (  70.00, -56.57) 01/19/2017   15:31:58  (  70.02, -56.55)    2.36                27
 01/19/2017   16:21:17   ( -69.01, 109.74) 01/19/2017   16:22:23  ( -69.03, 112.20)   97.82                66
 01/22/2017   06:08:48   (  70.98,  85.50) 01/22/2017   06:07:41  (  71.01,  83.01)   89.94                67
 01/22/2017   06:58:32   ( -70.12,-108.17) 01/22/2017   06:58:07  ( -70.08,-108.18)    3.40                25
 01/22/2017   07:48:00   (  69.95,  59.24) 01/22/2017   07:48:51  (  69.97,  59.31)    3.37                51
 01/24/2017   22:25:30   (  70.16,-159.85) 01/24/2017   22:24:18  (  70.17,-159.86)    1.26                72
 01/24/2017   23:15:00   ( -70.06,   7.63) 01/24/2017   23:15:00  ( -70.09,   7.59)    3.25                 0
 01/25/2017   00:04:29   (  69.83, 174.96) 01/25/2017   00:05:41  (  69.81, 175.32)   13.78                72