Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 11.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2017   02:55:52   ( -68.37, -45.39) 04/14/2017   02:56:49  ( -68.37, -45.40)    0.75                57
 04/14/2017   03:46:36   (  68.26, 122.07) 04/14/2017   03:46:16  (  68.26, 122.11)    1.80                20
 04/14/2017   04:37:06   ( -67.51, -69.69) 04/14/2017   04:35:56  ( -67.59, -71.03)   57.47                70
 04/16/2017   19:12:47   ( -68.31,  70.45) 04/16/2017   19:13:18  ( -68.32,  70.43)    1.26                31
 04/16/2017   20:03:31   (  68.20,-122.10) 04/16/2017   20:02:45  (  68.21,-122.06)    1.66                46
 04/19/2017   10:39:03   (  68.58,  18.56) 04/19/2017   10:40:13  (  68.54,  18.95)   16.29                70
 04/19/2017   11:29:41   ( -68.26,-173.71) 04/19/2017   11:29:46  ( -68.27,-173.75)    1.80                 5
 04/19/2017   12:20:25   (  68.15,  -6.26) 04/19/2017   12:19:13  (  68.15,  -6.24)    0.92                72
 04/22/2017   02:55:55   (  68.37, 134.60) 04/22/2017   02:56:44  (  68.37, 134.62)    0.73                49
 04/22/2017   03:46:36   ( -68.21, -57.88) 04/22/2017   03:46:15  ( -68.20, -57.94)    2.77                21
 04/22/2017   04:37:04   (  67.24, 110.62) 04/22/2017   04:35:56  (  67.30, 108.67)   84.00                68
 04/24/2017   18:22:24   ( -69.39,  81.68) 04/24/2017   18:23:30  ( -69.30,  84.03)   92.79                66
 04/24/2017   19:12:50   (  68.32,-109.57) 04/24/2017   19:13:13  (  68.30,-109.58)    2.96                23
 04/24/2017   20:03:31   ( -68.16,  57.95) 04/24/2017   20:02:43  ( -68.19,  57.92)    3.17                48