Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 15.  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)
 05/16/2018   11:29:54   (  68.33,   6.15) 05/16/2018   11:31:02  (  68.35,   6.10)    3.00                68
 05/16/2018   12:20:36   ( -68.25, 173.58) 05/16/2018   12:20:32  ( -68.24, 173.60)    1.18                 4
 05/16/2018   13:11:15   (  67.85, -18.62) 05/16/2018   13:10:03  (  67.91, -19.14)   22.85                72
 05/19/2018   03:46:49   (  68.31, 121.94) 05/19/2018   03:47:34  (  68.29, 121.90)    3.06                45
 05/19/2018   04:37:30   ( -68.17, -70.56) 05/19/2018   04:37:04  ( -68.18, -70.60)    2.01                26
 05/21/2018   19:13:16   ( -69.32,  69.04) 05/21/2018   19:14:23  ( -69.17,  71.22)   87.66                67
 05/21/2018   20:03:43   (  68.30,-122.26) 05/21/2018   20:04:04  (  68.29,-122.24)    1.62                21
 05/21/2018   20:54:24   ( -68.15,  45.24) 05/21/2018   20:53:34  ( -68.18,  45.27)    3.28                50
 05/24/2018   11:29:56   ( -68.51,-174.07) 05/24/2018   11:31:07  ( -68.45,-173.81)   12.44                71
 05/24/2018   12:20:37   (  68.23,  -6.40) 05/24/2018   12:20:36  (  68.22,  -6.44)    1.64                 1
 05/24/2018   13:11:19   ( -68.14, 161.03) 05/24/2018   13:10:06  ( -68.12, 161.07)    2.51                73
 05/27/2018   03:46:48   ( -68.33, -58.07) 05/27/2018   03:47:40  ( -68.33, -58.08)    0.40                52
 05/27/2018   04:37:32   (  68.21, 109.39) 05/27/2018   04:37:07  (  68.22, 109.42)    1.50                25
 05/27/2018   05:27:59   ( -67.32, -82.19) 05/27/2018   05:26:50  ( -67.39, -83.89)   73.33                69
 05/29/2018   19:13:19   (  69.38,-111.03) 05/29/2018   19:14:25  (  69.32,-108.61)   95.44                66
 05/29/2018   20:03:42   ( -68.27,  57.78) 05/29/2018   20:04:12  ( -68.27,  57.72)    2.92                30
 05/29/2018   20:54:26   (  68.15,-134.76) 05/29/2018   20:53:39  (  68.15,-134.78)    1.05                47