Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 26.  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)
 05/27/2018   03:46:48   ( -68.33, -58.07) 05/27/2018   03:47:39  ( -68.33, -58.08)    0.76                51
 05/27/2018   04:37:32   (  68.20, 109.41) 05/27/2018   04:37:06  (  68.22, 109.43)    2.17                26
 05/27/2018   05:27:58   ( -67.26, -82.12) 05/27/2018   05:26:50  ( -67.33, -83.95)   78.98                68
 05/29/2018   19:13:17   (  69.31,-110.94) 05/29/2018   19:14:24  (  69.23,-108.71)   88.33                67
 05/29/2018   20:03:41   ( -68.27,  57.79) 05/29/2018   20:04:09  ( -68.29,  57.75)    3.23                28
 05/29/2018   20:54:25   (  68.14,-134.74) 05/29/2018   20:53:37  (  68.12,-134.81)    3.18                48
 06/01/2018   11:29:57   (  68.50,   5.94) 06/01/2018   11:31:08  (  68.46,   6.19)   11.38                71
 06/01/2018   12:20:36   ( -68.26, 173.57) 06/01/2018   12:20:40  ( -68.25, 173.57)    0.90                 4
 06/01/2018   13:11:20   (  68.13, -18.96) 06/01/2018   13:10:07  (  68.13, -18.92)    1.54                73
 06/04/2018   03:46:49   (  68.33, 121.93) 06/04/2018   03:47:40  (  68.35, 121.94)    2.14                51
 06/04/2018   04:37:30   ( -68.20, -70.58) 06/04/2018   04:37:11  ( -68.20, -70.61)    1.65                19
 06/04/2018   05:27:59   (  67.26,  97.88) 06/04/2018   05:26:51  (  67.35,  96.06)   78.80                68
 06/06/2018   20:03:43   (  68.28,-122.22) 06/06/2018   20:04:11  (  68.29,-122.26)    2.46                28
 06/06/2018   20:54:25   ( -68.19,  45.21) 06/06/2018   20:53:41  ( -68.20,  45.26)    2.29                44