Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 6 13.  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)
 06/15/2017   06:58:07   ( -70.09,-108.14) 06/15/2017   06:57:32  ( -70.11,-108.11)    2.69                35
 06/15/2017   07:47:34   (  69.99,  59.37) 06/15/2017   07:48:16  (  69.98,  59.40)    1.93                42
 06/17/2017   22:25:02   (  70.48,-159.33) 06/17/2017   22:23:51  (  70.51,-160.27)   35.21                71
 06/17/2017   23:14:37   ( -70.09,   7.74) 06/17/2017   23:14:26  ( -70.06,   7.74)    3.33                11
 06/18/2017   00:04:04   (  69.99, 175.24) 06/18/2017   00:05:11  (  69.99, 175.17)    2.96                67
 06/20/2017   14:41:38   (  70.14, -43.94) 06/20/2017   14:40:39  (  70.15, -43.93)    0.59                59
 06/20/2017   15:31:08   ( -70.04, 123.54) 06/20/2017   15:31:20  ( -70.02, 123.59)    2.87                12
 06/20/2017   16:20:46   (  69.32, -69.79) 06/20/2017   16:21:54  (  69.36, -68.14)   65.01                68
 06/23/2017   06:58:07   (  70.13,  71.93) 06/23/2017   06:57:32  (  70.11,  71.91)    3.02                35
 06/23/2017   07:47:37   ( -70.03,-120.59) 06/23/2017   07:48:14  ( -70.02,-120.65)    2.35                37
 06/25/2017   22:25:02   ( -70.67,  20.95) 06/25/2017   22:23:52  ( -70.71,  19.42)   56.38                70
 06/25/2017   23:14:38   (  70.06,-172.29) 06/25/2017   23:14:26  (  70.07,-172.26)    1.29                12
 06/26/2017   00:04:08   ( -69.96,  -4.80) 06/26/2017   00:05:08  ( -69.98,  -4.81)    1.97                60