Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 25.  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)
 12/26/2017   22:25:32   (  70.36,-159.57) 12/26/2017   22:24:20  (  70.46,-160.29)   28.86                72
 12/26/2017   23:15:05   ( -70.08,   7.66) 12/26/2017   23:14:57  ( -70.10,   7.59)    3.11                 8
 12/27/2017   00:04:33   (  69.93, 175.08) 12/27/2017   00:05:40  (  69.94, 175.14)    2.33                67
 12/29/2017   14:42:03   (  70.16, -43.99) 12/29/2017   14:41:07  (  70.15, -44.04)    2.18                56
 12/29/2017   15:31:33   ( -70.05, 123.49) 12/29/2017   15:31:49  ( -70.05, 123.43)    2.45                16
 12/29/2017   16:21:13   (  69.22, -69.99) 12/29/2017   16:22:20  (  69.26, -68.10)   74.53                67
 01/01/2018   06:58:32   (  70.11,  71.83) 01/01/2018   06:58:00  (  70.11,  71.79)    1.49                32
 01/01/2018   07:48:02   ( -70.00,-120.69) 01/01/2018   07:48:42  ( -70.01,-120.74)    2.18                40
 01/03/2018   22:25:28   ( -70.50,  20.62) 01/03/2018   22:24:17  ( -70.60,  19.49)   43.59                71
 01/03/2018   23:15:01   (  70.06,-172.36) 01/03/2018   23:14:53  (  70.08,-172.38)    2.47                 8
 01/04/2018   00:04:31   ( -69.95,  -4.88) 01/04/2018   00:05:35  ( -69.98,  -4.91)    3.03                64
 01/06/2018   14:42:02   ( -70.17, 136.03) 01/06/2018   14:41:02  ( -70.15, 135.98)    2.92                60
 01/06/2018   15:31:29   (  70.06, -56.49) 01/06/2018   15:31:46  (  70.05, -56.56)    2.97                17
 01/06/2018   16:21:09   ( -69.40, 110.25) 01/06/2018   16:22:18  ( -69.42, 111.69)   56.28                69