Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 4 13.  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)
 04/14/2019   19:12:40   (  68.33,-109.57) 04/14/2019   19:13:34  (  68.35,-109.59)    2.27                54
 04/14/2019   20:03:22   ( -68.25,  57.86) 04/14/2019   20:03:04  ( -68.24,  57.91)    2.42                18
 04/14/2019   20:53:52   (  67.36,-133.75) 04/14/2019   20:52:44  (  67.41,-135.41)   71.15                68
 04/17/2019   11:29:37   (  68.33,   6.20) 04/17/2019   11:30:05  (  68.31,   6.24)    2.30                28
 04/17/2019   12:20:17   ( -68.19, 173.70) 04/17/2019   12:19:34  ( -68.21, 173.74)    3.13                43
 04/20/2019   02:55:54   ( -68.71, -45.85) 04/20/2019   02:57:05  ( -68.59, -45.20)   29.49                71
 04/20/2019   03:46:32   (  68.27, 122.03) 04/20/2019   03:46:36  (  68.26, 122.04)    1.91                 4
 04/20/2019   04:37:13   ( -68.13, -70.46) 04/20/2019   04:36:06  ( -68.16, -70.45)    3.28                67
 04/22/2019   19:12:44   ( -68.33,  70.41) 04/22/2019   19:13:41  ( -68.35,  70.38)    2.56                57
 04/22/2019   20:03:28   (  68.22,-122.13) 04/22/2019   20:03:08  (  68.23,-122.12)    1.83                20
 04/22/2019   20:53:58   ( -67.48,  46.10) 04/22/2019   20:52:48  ( -67.58,  44.75)   58.52                70
 04/25/2019   11:29:41   ( -68.33,-173.82) 04/25/2019   11:30:14  ( -68.32,-173.80)    1.99                33
 04/25/2019   12:20:24   (  68.17,  -6.30) 04/25/2019   12:19:41  (  68.19,  -6.30)    3.06                43