Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 8.  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)
 04/11/2017   10:39:05   ( -68.83,-161.76) 04/11/2017   10:40:16  ( -68.66,-160.92)   38.46                71
 04/11/2017   11:29:41   (  68.29,   6.26) 04/11/2017   11:29:48  (  68.27,   6.25)    1.48                 7
 04/11/2017   12:20:23   ( -68.19, 173.70) 04/11/2017   12:19:18  ( -68.17, 173.76)    3.29                65
 04/14/2017   02:55:51   ( -68.34, -45.35) 04/14/2017   02:56:49  ( -68.37, -45.40)    3.19                58
 04/14/2017   03:46:35   (  68.23, 122.10) 04/14/2017   03:46:16  (  68.25, 122.11)    2.00                19
 04/14/2017   04:37:06   ( -67.54, -69.73) 04/14/2017   04:35:56  ( -67.59, -71.03)   55.58                70
 04/16/2017   19:12:47   ( -68.34,  70.42) 04/16/2017   19:13:18  ( -68.34,  70.45)    1.53                31
 04/16/2017   20:03:30   (  68.18,-122.07) 04/16/2017   20:02:46  (  68.17,-122.11)    1.96                44
 04/19/2017   10:39:04   (  68.61,  18.52) 04/19/2017   10:40:15  (  68.53,  18.93)   19.06                71
 04/19/2017   11:29:42   ( -68.29,-173.75) 04/19/2017   11:29:48  ( -68.26,-173.76)    3.08                 6
 04/19/2017   12:20:25   (  68.13,  -6.24) 04/19/2017   12:19:15  (  68.15,  -6.25)    1.77                70
 04/22/2017   02:55:55   (  68.35, 134.63) 04/22/2017   02:56:47  (  68.34, 134.58)    2.09                52
 04/22/2017   03:46:37   ( -68.24, -57.92) 04/22/2017   03:46:17  ( -68.24, -57.91)    0.51                20
 04/22/2017   04:37:06   (  67.33, 110.52) 04/22/2017   04:35:58  (  67.34, 108.70)   77.80                68