Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 5 9.  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)
 05/09/2018   06:08:01   ( -70.22, -95.72) 05/09/2018   06:06:56  ( -70.22, -95.64)    2.96                65
 05/09/2018   06:57:28   (  70.12,  71.79) 05/09/2018   06:57:40  (  70.11,  71.84)    2.69                12
 05/09/2018   07:47:05   ( -69.62,-121.28) 05/09/2018   07:48:15  ( -69.64,-120.15)   43.87                70
 05/11/2018   22:24:29   ( -70.19,  20.11) 05/11/2018   22:23:51  ( -70.19,  20.17)    2.36                38
 05/11/2018   23:13:56   (  70.08,-172.39) 05/11/2018   23:14:35  (  70.08,-172.35)    1.45                39
 05/14/2018   13:51:22   (  70.53, -31.14) 05/14/2018   13:50:10  (  70.58, -31.99)   32.18                72
 05/14/2018   14:40:57   ( -70.15, 135.93) 05/14/2018   14:40:46  ( -70.17, 135.98)    2.90                11
 05/14/2018   15:30:24   (  70.04, -56.57) 05/14/2018   15:31:30  (  70.06, -56.55)    2.52                66
 05/17/2018   06:07:53   (  70.27,  84.35) 05/17/2018   06:06:58  (  70.25,  84.31)    2.71                55
 05/17/2018   06:57:23   ( -70.16,-108.17) 05/17/2018   06:57:40  ( -70.15,-108.22)    2.32                17
 05/17/2018   07:47:03   (  69.33,  58.34) 05/17/2018   07:48:10  (  69.30,  60.34)   78.73                67
 05/19/2018   22:24:21   (  70.22,-159.84) 05/19/2018   22:23:53  (  70.23,-159.90)    2.64                28
 05/19/2018   23:13:51   ( -70.12,   7.65) 05/19/2018   23:14:35  ( -70.13,   7.58)    3.14                44
 05/22/2018   13:51:20   ( -70.39, 148.65) 05/22/2018   13:50:07  ( -70.48, 148.18)   19.84                73
 05/22/2018   14:40:49   (  70.17, -44.03) 05/22/2018   14:40:47  (  70.17, -44.02)    0.49                 2
 05/22/2018   15:30:19   ( -70.07, 123.46) 05/22/2018   15:31:29  ( -70.07, 123.45)    0.18                70