Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 8 28.  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)
 08/28/2018   11:30:15   ( -68.44,-173.97) 08/28/2018   11:31:10  ( -68.42,-173.91)    3.20                55
 08/28/2018   12:20:58   (  68.27,  -6.44) 08/28/2018   12:20:38  (  68.26,  -6.46)    1.54                20
 08/28/2018   13:11:28   ( -67.53, 161.80) 08/28/2018   13:10:18  ( -67.59, 160.40)   59.74                70
 08/31/2018   02:56:47   (  69.45, 133.09) 08/31/2018   02:57:53  (  69.37, 135.55)   96.53                66
 08/31/2018   03:47:11   ( -68.39, -58.14) 08/31/2018   03:47:39  ( -68.37, -58.08)    3.46                28
 08/31/2018   04:37:54   (  68.23, 109.38) 08/31/2018   04:37:07  (  68.21, 109.36)    2.34                47
 09/02/2018   19:13:26   (  68.51,-109.84) 09/02/2018   19:14:37  (  68.48,-109.71)    6.38                71
 09/02/2018   20:04:06   ( -68.30,  57.75) 09/02/2018   20:04:08  ( -68.31,  57.73)    1.72                 2
 09/02/2018   20:54:49   (  68.13,-134.73) 09/02/2018   20:53:36  (  68.15,-134.83)    4.07                73
 09/05/2018   11:30:21   (  68.42,   6.04) 09/05/2018   11:31:06  (  68.41,   6.09)    2.25                45
 09/05/2018   12:21:02   ( -68.26, 173.56) 09/05/2018   12:20:37  ( -68.24, 173.52)    2.66                25
 09/05/2018   13:11:27   (  67.12, -17.74) 09/05/2018   13:10:21  (  67.17, -20.05)   99.81                66
 09/08/2018   02:56:46   ( -69.24, -46.61) 09/08/2018   02:57:54  ( -69.16, -44.74)   74.43                68
 09/08/2018   03:47:15   (  68.33, 121.93) 09/08/2018   03:47:34  (  68.32, 121.87)    2.54                19
 09/08/2018   04:37:57   ( -68.23, -70.62) 09/08/2018   04:37:04  ( -68.21, -70.63)    1.28                53
 09/10/2018   19:13:28   ( -68.46,  70.22) 09/10/2018   19:14:34  ( -68.45,  70.26)    1.91                66
 09/10/2018   20:04:11   (  68.30,-122.27) 09/10/2018   20:04:02  (  68.28,-122.30)    2.40                 9
 09/10/2018   20:54:48   ( -67.92,  45.53) 09/10/2018   20:53:36  ( -67.95,  44.95)   24.30                72