Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 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)
 04/12/2017   06:08:09   (  71.04,  85.53) 04/12/2017   06:07:02  (  71.07,  83.03)   90.40                67
 04/12/2017   06:57:53   ( -70.16,-108.15) 04/12/2017   06:57:28  ( -70.13,-108.13)    3.10                25
 04/12/2017   07:47:20   (  70.05,  59.34) 04/12/2017   07:48:12  (  70.02,  59.34)    3.24                52
 04/14/2017   22:24:51   (  70.24,-159.78) 04/14/2017   22:23:42  (  70.23,-159.84)    2.59                69
 04/14/2017   23:14:21   ( -70.13,   7.69) 04/14/2017   23:14:24  ( -70.13,   7.64)    2.17                 3
 04/15/2017   00:03:52   (  69.81, 174.88) 04/15/2017   00:05:04  (  69.81, 175.42)   20.88                72
 04/17/2017   14:41:19   (  70.16, -44.03) 04/17/2017   14:40:36  (  70.18, -44.00)    2.92                43
 04/17/2017   15:30:49   ( -70.05, 123.45) 04/17/2017   15:31:18  ( -70.08, 123.49)    2.94                29
 04/20/2017   06:08:09   ( -70.84, -94.79) 04/20/2017   06:07:00  ( -70.91, -96.71)   70.39                69
 04/20/2017   06:57:47   (  70.12,  71.80) 04/20/2017   06:57:31  (  70.13,  71.85)    2.17                16
 04/20/2017   07:47:17   ( -70.02,-120.71) 04/20/2017   07:48:13  ( -70.03,-120.67)    1.79                56
 04/22/2017   22:24:47   ( -70.25,  20.22) 04/22/2017   22:23:43  ( -70.24,  20.15)    3.33                64
 04/22/2017   23:14:15   (  70.08,-172.38) 04/22/2017   23:14:26  (  70.09,-172.31)    2.50                11
 04/23/2017   00:03:51   ( -69.65,  -5.34) 04/23/2017   00:05:02  ( -69.66,  -4.36)   38.10                71