Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 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)
 05/08/2018   11:29:52   ( -68.35,-173.87) 05/08/2018   11:30:57  ( -68.37,-173.86)    2.27                65
 05/08/2018   12:20:36   (  68.23,  -6.41) 05/08/2018   12:20:25  (  68.21,  -6.41)    2.28                11
 05/08/2018   13:11:12   ( -67.82, 161.42) 05/08/2018   13:09:59  ( -67.88, 160.84)   25.53                73
 05/11/2018   03:46:47   ( -68.32, -58.07) 05/11/2018   03:47:29  ( -68.32, -58.05)    0.88                42
 05/11/2018   04:37:30   (  68.15, 109.46) 05/11/2018   04:36:57  (  68.16, 109.40)    2.54                33
 05/13/2018   19:13:12   (  69.04,-110.57) 05/13/2018   19:14:21  (  68.93,-109.06)   61.27                69
 05/13/2018   20:03:41   ( -68.25,  57.80) 05/13/2018   20:04:01  ( -68.27,  57.76)    2.80                20
 05/13/2018   20:54:25   (  68.13,-134.74) 05/13/2018   20:53:28  (  68.15,-134.73)    2.57                57
 05/16/2018   11:29:55   (  68.38,   6.09) 05/16/2018   11:31:02  (  68.36,   6.11)    1.74                67
 05/16/2018   12:20:36   ( -68.23, 173.60) 05/16/2018   12:20:33  ( -68.21, 173.55)    3.04                 3
 05/16/2018   13:11:15   (  67.84, -18.61) 05/16/2018   13:10:03  (  67.92, -19.13)   23.69                72
 05/19/2018   03:46:48   (  68.31, 121.95) 05/19/2018   03:47:33  (  68.29, 121.90)    2.68                45
 05/19/2018   04:37:30   ( -68.21, -70.61) 05/19/2018   04:37:03  ( -68.20, -70.59)    1.85                27
 05/21/2018   19:13:16   ( -69.31,  69.06) 05/21/2018   19:14:23  ( -69.17,  71.22)   86.68                67
 05/21/2018   20:03:43   (  68.29,-122.26) 05/21/2018   20:04:04  (  68.28,-122.25)    2.12                21
 05/21/2018   20:54:24   ( -68.14,  45.25) 05/21/2018   20:53:35  ( -68.12,  45.20)    2.92                49