Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 8.  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)
 04/09/2018   22:24:47   ( -70.22,  20.19) 04/09/2018   22:23:46  ( -70.23,  20.12)    2.66                61
 04/09/2018   23:14:15   (  70.07,-172.39) 04/09/2018   23:14:29  (  70.07,-172.32)    2.71                14
 04/10/2018   00:03:53   ( -69.51,  -5.52) 04/10/2018   00:05:02  ( -69.50,  -4.15)   53.33                69
 04/12/2018   14:41:15   ( -70.20, 136.03) 04/12/2018   14:40:41  ( -70.18, 135.97)    3.09                34
 04/12/2018   15:30:43   (  70.04, -56.55) 04/12/2018   15:31:24  (  70.02, -56.48)    3.36                41
 04/15/2018   06:08:11   (  70.39,  84.55) 04/15/2018   06:06:58  (  70.45,  84.01)   21.33                73
 04/15/2018   06:57:44   ( -70.12,-108.21) 04/15/2018   06:57:36  ( -70.13,-108.18)    1.79                 8
 04/15/2018   07:47:11   (  70.01,  59.28) 04/15/2018   07:48:20  (  70.03,  59.28)    2.38                69
 04/17/2018   22:24:41   (  70.19,-159.86) 04/17/2018   22:23:48  (  70.19,-159.82)    1.17                53
 04/17/2018   23:14:11   ( -70.09,   7.63) 04/17/2018   23:14:30  ( -70.08,   7.66)    1.29                19
 04/18/2018   00:03:53   (  69.14, 174.00) 04/18/2018   00:04:59  (  69.19, 176.28)   90.41                66
 04/20/2018   14:41:09   (  70.15, -44.03) 04/20/2018   14:40:43  (  70.15, -43.99)    1.55                26
 04/20/2018   15:30:39   ( -70.05, 123.46) 04/20/2018   15:31:25  ( -70.04, 123.50)    2.09                46