Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 12 15.  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)
 12/15/2016   22:25:42   ( -70.14,  20.12) 12/15/2016   22:24:32  ( -70.14,  20.19)    2.61                70
 12/15/2016   23:15:09   (  70.04,-172.38) 12/15/2016   23:15:16  (  70.03,-172.35)    1.60                 7
 12/16/2016   00:04:43   ( -69.71,  -5.21) 12/16/2016   00:05:54  ( -69.72,  -4.56)   25.07                71
 12/18/2016   14:42:11   ( -70.09, 135.93) 12/18/2016   14:41:26  ( -70.10, 136.00)    2.99                45
 12/18/2016   15:31:38   (  69.99, -56.57) 12/18/2016   15:32:10  (  70.00, -56.53)    2.25                32
 12/21/2016   06:08:59   (  70.75,  85.15) 12/21/2016   06:07:50  (  70.81,  83.33)   66.80                69
 12/21/2016   06:58:39   ( -70.09,-108.18) 12/21/2016   06:58:20  ( -70.08,-108.18)    1.98                19
 12/21/2016   07:48:06   (  69.99,  59.31) 12/21/2016   07:49:04  (  69.98,  59.28)    1.51                58
 12/23/2016   22:25:38   (  70.14,-159.87) 12/23/2016   22:24:32  (  70.16,-159.85)    1.87                66
 12/23/2016   23:15:08   ( -70.03,   7.61) 12/23/2016   23:15:14  ( -70.05,   7.63)    1.75                 6
 12/24/2016   00:04:41   (  69.59, 174.65) 12/24/2016   00:05:51  (  69.58, 175.64)   38.47                70
 12/26/2016   14:42:05   (  70.13, -44.00) 12/26/2016   14:41:25  (  70.13, -44.04)    1.59                40
 12/26/2016   15:31:35   ( -70.02, 123.48) 12/26/2016   15:32:07  ( -70.03, 123.44)    1.84                32