Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 19.  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)
 04/22/2017   02:55:55   (  68.36, 134.61) 04/22/2017   02:56:52  (  68.36, 134.57)    1.61                57
 04/22/2017   03:46:37   ( -68.27, -57.95) 04/22/2017   03:46:22  ( -68.25, -57.92)    2.02                15
 04/22/2017   04:37:09   (  67.50, 110.31) 04/22/2017   04:35:59  (  67.58, 108.94)   58.60                70
 04/24/2017   19:12:50   (  68.32,-109.57) 04/24/2017   19:13:22  (  68.35,-109.57)    2.91                32
 04/24/2017   20:03:32   ( -68.22,  57.87) 04/24/2017   20:02:52  ( -68.24,  57.94)    3.24                40
 04/27/2017   10:39:08   ( -68.82,-161.77) 04/27/2017   10:40:19  ( -68.71,-160.89)   37.53                71
 04/27/2017   11:29:44   (  68.28,   6.25) 04/27/2017   11:29:52  (  68.27,   6.21)    2.37                 8
 04/27/2017   12:20:26   ( -68.18, 173.69) 04/27/2017   12:19:22  ( -68.16, 173.72)    2.80                64
 04/30/2017   02:55:56   ( -68.41, -45.45) 04/30/2017   02:56:54  ( -68.40, -45.39)    2.84                58
 04/30/2017   03:46:39   (  68.25, 122.07) 04/30/2017   03:46:22  (  68.23, 122.05)    2.08                17
 04/30/2017   04:37:11   ( -67.61, -69.82) 04/30/2017   04:36:00  ( -67.68, -70.96)   48.64                71
 05/02/2017   19:12:50   ( -68.33,  70.43) 05/02/2017   19:13:24  ( -68.35,  70.43)    3.15                34
 05/02/2017   20:03:34   (  68.22,-122.12) 05/02/2017   20:02:51  (  68.24,-122.06)    3.51                43