Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 5 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)
 05/11/2015   19:06:31   (  70.73,-109.67) 05/11/2015   19:05:54  (  70.71,-109.73)    2.55                37
 05/11/2015   19:56:01   ( -70.60,  57.78) 05/11/2015   19:56:35  ( -70.59,  57.79)    1.80                34
 05/14/2015   10:33:24   ( -71.24,-160.64) 05/14/2015   10:32:14  ( -71.30,-162.27)   58.51                70
 05/14/2015   11:23:00   (  70.66,   6.10) 05/14/2015   11:22:48  (  70.65,   6.13)    1.11                12
 05/14/2015   12:12:29   ( -70.59, 173.64) 05/14/2015   12:13:30  ( -70.58, 173.57)    3.14                61
 05/17/2015   02:50:02   ( -70.72, -45.58) 05/17/2015   02:48:58  ( -70.73, -45.54)    1.78                64
 05/17/2015   03:39:29   (  70.62, 121.91) 05/17/2015   03:39:42  (  70.60, 121.97)    2.84                13
 05/17/2015   04:29:06   ( -70.12, -71.18) 05/17/2015   04:30:16  ( -70.10, -69.93)   47.29                70
 05/19/2015   19:06:31   ( -70.71,  70.29) 05/19/2015   19:05:53  ( -70.73,  70.21)    3.40                38
 05/19/2015   19:55:58   (  70.61,-122.23) 05/19/2015   19:56:37  (  70.61,-122.28)    1.98                39
 05/22/2015   10:33:23   (  71.17,  19.23) 05/22/2015   10:32:13  (  71.25,  17.79)   52.43                70
 05/22/2015   11:23:00   ( -70.68,-173.89) 05/22/2015   11:22:46  ( -70.70,-173.96)    3.05                14
 05/22/2015   12:12:27   (  70.58,  -6.40) 05/22/2015   12:13:30  (  70.58,  -6.46)    2.15                63
 05/25/2015   02:50:01   (  70.74, 134.42) 05/25/2015   02:48:58  (  70.76, 134.38)    2.74                63
 05/25/2015   03:39:31   ( -70.63, -58.10) 05/25/2015   03:39:39  ( -70.62, -58.07)    2.00                 8
 05/25/2015   04:29:06   (  70.08, 108.74) 05/25/2015   04:30:15  (  70.08, 110.08)   50.70                69