Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 4 29.  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)
 04/30/2018   11:29:52   (  68.32,   6.15) 04/30/2018   11:30:50  (  68.34,   6.13)    1.60                58
 04/30/2018   12:20:34   ( -68.23, 173.59) 04/30/2018   12:20:20  ( -68.23, 173.63)    1.93                14
 04/30/2018   13:11:07   (  67.52, -18.22) 04/30/2018   13:09:57  (  67.56, -19.49)   54.30                70
 05/03/2018   03:46:47   (  68.29, 121.97) 05/03/2018   03:47:22  (  68.30, 121.96)    0.73                35
 05/03/2018   04:37:29   ( -68.20, -70.59) 05/03/2018   04:36:52  ( -68.19, -70.54)    2.41                37
 05/05/2018   19:13:09   ( -68.96,  69.54) 05/05/2018   19:14:18  ( -68.86,  70.87)   54.51                69
 05/05/2018   20:03:42   (  68.26,-122.22) 05/05/2018   20:03:54  (  68.25,-122.23)    1.05                12
 05/05/2018   20:54:24   ( -68.16,  45.22) 05/05/2018   20:53:24  ( -68.15,  45.28)    3.18                60
 05/08/2018   11:29:52   ( -68.34,-173.86) 05/08/2018   11:30:57  ( -68.37,-173.86)    2.91                65
 05/08/2018   12:20:36   (  68.23,  -6.41) 05/08/2018   12:20:25  (  68.20,  -6.42)    3.42                11
 05/08/2018   13:11:12   ( -67.81, 161.43) 05/08/2018   13:09:59  ( -67.87, 160.83)   26.27                73
 05/11/2018   03:46:47   ( -68.31, -58.05) 05/11/2018   03:47:29  ( -68.31, -58.06)    0.28                42
 05/11/2018   04:37:31   (  68.20, 109.39) 05/11/2018   04:36:56  (  68.20, 109.45)    2.35                35
 05/13/2018   19:13:12   (  69.03,-110.56) 05/13/2018   19:14:21  (  68.91,-109.08)   60.27                69
 05/13/2018   20:03:42   ( -68.28,  57.75) 05/13/2018   20:04:01  ( -68.25,  57.74)    3.46                19
 05/13/2018   20:54:25   (  68.12,-134.73) 05/13/2018   20:53:28  (  68.14,-134.75)    1.85                57