Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 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)
 04/12/2018   14:41:16   ( -70.15, 135.97) 04/12/2018   14:40:41  ( -70.17, 135.99)    1.79                35
 04/12/2018   15:30:43   (  70.05, -56.53) 04/12/2018   15:31:25  (  70.06, -56.54)    0.84                42
 04/15/2018   06:08:10   (  70.40,  84.57) 04/15/2018   06:06:58  (  70.49,  83.94)   25.05                72
 04/15/2018   06:57:43   ( -70.12,-108.20) 04/15/2018   06:57:35  ( -70.12,-108.17)    1.29                 8
 04/15/2018   07:47:10   (  70.02,  59.30) 04/15/2018   07:48:19  (  70.02,  59.30)    0.45                69
 04/17/2018   22:24:41   (  70.20,-159.85) 04/17/2018   22:23:48  (  70.18,-159.80)    2.64                53
 04/17/2018   23:14:11   ( -70.09,   7.63) 04/17/2018   23:14:30  ( -70.07,   7.67)    2.37                19
 04/18/2018   00:03:53   (  69.15, 174.01) 04/18/2018   00:04:59  (  69.17, 176.30)   90.70                66
 04/20/2018   14:41:09   (  70.16, -44.03) 04/20/2018   14:40:43  (  70.14, -43.97)    2.75                26
 04/20/2018   15:30:39   ( -70.05, 123.45) 04/20/2018   15:31:25  ( -70.03, 123.51)    3.00                46
 04/23/2018   06:08:09   ( -70.28, -95.62) 04/23/2018   06:06:56  ( -70.30, -95.76)    6.00                73
 04/23/2018   06:57:37   (  70.11,  71.78) 04/23/2018   06:57:38  (  70.10,  71.85)    2.75                 1
 04/23/2018   07:47:07   ( -70.00,-120.73) 04/23/2018   07:48:20  ( -69.99,-120.66)    3.16                73