Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 3.  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   ( -70.15, 136.02) 12/05/2017   14:41:17  ( -70.13, 135.98)    2.47                47
 12/05/2017   15:31:31   (  70.04, -56.48) 12/05/2017   15:32:01  (  70.02, -56.54)    3.30                30
 12/08/2017   06:08:51   (  70.91,  85.41) 12/08/2017   06:07:43  (  70.95,  83.12)   83.29                68
 12/08/2017   06:58:34   ( -70.09,-108.18) 12/08/2017   06:58:11  ( -70.12,-108.22)    3.02                23
 12/08/2017   07:48:01   (  69.98,  59.32) 12/08/2017   07:48:54  (  69.96,  59.32)    2.82                53
 12/10/2017   22:25:33   (  70.14,-159.87) 12/10/2017   22:24:21  (  70.16,-159.83)    2.60                72
 12/10/2017   23:15:03   ( -70.03,   7.62) 12/10/2017   23:15:03  ( -70.05,   7.65)    2.41                 0
 12/11/2017   00:04:32   (  69.81, 174.95) 12/11/2017   00:05:44  (  69.79, 175.34)   15.21                72
 12/13/2017   14:42:02   (  70.12, -44.01) 12/13/2017   14:41:14  (  70.10, -43.97)    3.10                48
 12/13/2017   15:31:32   ( -70.02, 123.48) 12/13/2017   15:31:57  ( -70.04, 123.43)    3.01                25
 12/16/2017   06:58:31   (  70.10,  71.84) 12/16/2017   06:58:08  (  70.09,  71.81)    1.19                23
 12/16/2017   07:48:01   ( -70.00,-120.67) 12/16/2017   07:48:50  ( -69.98,-120.70)    2.30                49