Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 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)
 04/15/2018   06:08:10   (  70.40,  84.56) 04/15/2018   06:06:58  (  70.49,  83.94)   25.36                72
 04/15/2018   06:57:43   ( -70.12,-108.21) 04/15/2018   06:57:35  ( -70.13,-108.17)    1.39                 8
 04/15/2018   07:47:10   (  70.02,  59.29) 04/15/2018   07:48:19  (  70.02,  59.30)    0.31                69
 04/17/2018   22:24:41   (  70.20,-159.85) 04/17/2018   22:23:48  (  70.18,-159.81)    2.36                53
 04/17/2018   23:14:11   ( -70.08,   7.62) 04/17/2018   23:14:30  ( -70.08,   7.67)    1.88                19
 04/18/2018   00:03:53   (  69.15, 174.00) 04/18/2018   00:04:59  (  69.18, 176.29)   90.76                66
 04/20/2018   14:41:09   (  70.15, -44.03) 04/20/2018   14:40:43  (  70.14, -43.97)    2.89                26
 04/20/2018   15:30:39   ( -70.04, 123.45) 04/20/2018   15:31:25  ( -70.03, 123.51)    2.84                46
 04/23/2018   06:08:09   ( -70.27, -95.63) 04/23/2018   06:06:56  ( -70.30, -95.76)    5.65                73
 04/23/2018   06:57:37   (  70.11,  71.78) 04/23/2018   06:57:38  (  70.10,  71.86)    3.28                 1
 04/23/2018   07:47:07   ( -70.00,-120.73) 04/23/2018   07:48:20  ( -69.99,-120.65)    3.51                73
 04/25/2018   22:24:36   ( -70.22,  20.18) 04/25/2018   22:23:49  ( -70.20,  20.16)    2.74                47
 04/25/2018   23:14:03   (  70.11,-172.33) 04/25/2018   23:14:33  (  70.11,-172.39)    2.08                30