Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 10.  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)
 12/10/2017   22:25:34   (  70.14,-159.88) 12/10/2017   22:24:21  (  70.13,-159.80)    3.00                73
 12/10/2017   23:15:04   ( -70.02,   7.60) 12/10/2017   23:15:03  ( -70.04,   7.67)    3.14                 1
 12/11/2017   00:04:33   (  69.81, 174.95) 12/11/2017   00:05:45  (  69.82, 175.30)   13.55                72
 12/13/2017   14:42:04   (  70.14, -44.00) 12/13/2017   14:41:15  (  70.13, -44.02)    1.38                49
 12/13/2017   15:31:34   ( -70.03, 123.48) 12/13/2017   15:31:57  ( -70.03, 123.45)    1.02                23
 12/16/2017   06:58:34   (  70.08,  71.80) 12/16/2017   06:58:07  (  70.07,  71.84)    1.92                27
 12/16/2017   07:48:04   ( -69.97,-120.72) 12/16/2017   07:48:49  ( -69.97,-120.69)    1.37                45
 12/18/2017   22:25:34   ( -70.35,  20.41) 12/18/2017   22:24:22  ( -70.43,  19.74)   26.73                72
 12/18/2017   23:15:04   (  70.08,-172.34) 12/18/2017   23:15:01  (  70.07,-172.39)    1.96                 3
 12/19/2017   00:04:34   ( -69.97,  -4.85) 12/19/2017   00:05:43  ( -69.97,  -4.91)    2.34                69
 12/21/2017   14:42:08   ( -70.12, 135.96) 12/21/2017   14:41:10  ( -70.12, 136.01)    1.76                58
 12/21/2017   15:31:35   (  70.01, -56.55) 12/21/2017   15:31:54  (  70.02, -56.54)    1.43                19
 12/21/2017   16:21:16   ( -69.30, 110.12) 12/21/2017   16:22:24  ( -69.28, 111.86)   68.81                68
 12/24/2017   06:58:38   ( -70.11,-108.18) 12/24/2017   06:58:04  ( -70.12,-108.23)    2.07                34
 12/24/2017   07:48:05   (  70.00,  59.30) 12/24/2017   07:48:47  (  69.98,  59.31)    2.47                42