Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 7.  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)    2.20                65
 05/08/2018   12:20:36   (  68.23,  -6.41) 05/08/2018   12:20:25  (  68.21,  -6.41)    2.73                11
 05/08/2018   13:11:12   ( -67.82, 161.42) 05/08/2018   13:09:59  ( -67.88, 160.84)   25.46                73
 05/11/2018   03:46:47   ( -68.33, -58.07) 05/11/2018   03:47:29  ( -68.32, -58.05)    1.03                42
 05/11/2018   04:37:30   (  68.15, 109.46) 05/11/2018   04:36:57  (  68.15, 109.40)    2.54                33
 05/13/2018   19:13:12   (  69.04,-110.57) 05/13/2018   19:14:21  (  68.92,-109.07)   61.35                69
 05/13/2018   20:03:41   ( -68.25,  57.80) 05/13/2018   20:04:01  ( -68.26,  57.75)    2.48                20
 05/13/2018   20:54:25   (  68.13,-134.74) 05/13/2018   20:53:28  (  68.15,-134.74)    1.65                57
 05/16/2018   11:29:55   (  68.38,   6.09) 05/16/2018   11:31:02  (  68.35,   6.10)    2.85                67
 05/16/2018   12:20:36   ( -68.23, 173.60) 05/16/2018   12:20:32  ( -68.25, 173.61)    2.95                 4
 05/16/2018   13:11:15   (  67.85, -18.61) 05/16/2018   13:10:03  (  67.91, -19.14)   23.46                72
 05/19/2018   03:46:48   (  68.31, 121.95) 05/19/2018   03:47:32  (  68.34, 121.95)    3.07                44
 05/19/2018   04:37:30   ( -68.21, -70.61) 05/19/2018   04:37:03  ( -68.19, -70.60)    3.04                27