Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 4 21.  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)
 04/22/2019   19:12:44   ( -68.33,  70.42) 04/22/2019   19:13:37  ( -68.35,  70.39)    1.95                53
 04/22/2019   20:03:28   (  68.20,-122.11) 04/22/2019   20:03:05  (  68.19,-122.15)    2.10                23
 04/22/2019   20:53:56   ( -67.37,  46.24) 04/22/2019   20:52:47  ( -67.40,  44.58)   71.01                69
 04/25/2019   10:39:16   (  69.32,  17.53) 04/25/2019   10:40:23  (  69.23,  19.74)   87.48                67
 04/25/2019   11:29:41   ( -68.32,-173.80) 04/25/2019   11:30:07  ( -68.33,-173.75)    2.65                26
 04/25/2019   12:20:25   (  68.19,  -6.34) 04/25/2019   12:19:35  (  68.17,  -6.29)    2.85                50
 04/28/2019   02:55:55   (  68.39, 134.55) 04/28/2019   02:57:07  (  68.37, 134.54)    2.06                72
 04/28/2019   03:46:36   ( -68.25, -57.95) 04/28/2019   03:46:37  ( -68.26, -57.96)    1.82                 1
 04/28/2019   04:37:18   (  68.02, 109.65) 04/28/2019   04:36:06  (  68.04, 109.43)    9.59                72
 04/30/2019   19:12:52   (  68.38,-109.67) 04/30/2019   19:13:37  (  68.36,-109.60)    3.45                45
 04/30/2019   20:03:33   ( -68.23,  57.84) 04/30/2019   20:03:08  ( -68.19,  57.84)    3.48                25
 04/30/2019   20:53:58   (  67.08,-133.46) 04/30/2019   20:52:52  (  67.13,-135.73)   98.27                66
 05/03/2019   10:39:20   ( -69.27,-162.42) 05/03/2019   10:40:27  ( -69.18,-160.35)   82.44                67
 05/03/2019   11:29:48   (  68.30,   6.19) 05/03/2019   11:30:08  (  68.29,   6.19)    1.47                20
 05/03/2019   12:20:30   ( -68.20, 173.63) 05/03/2019   12:19:38  ( -68.18, 173.70)    3.35                52