Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 1 11.  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)
 01/13/2018   18:22:39   (  69.03, -97.90) 01/13/2018   18:23:48  (  68.93, -96.45)   59.27                69
 01/13/2018   19:13:09   ( -68.31,  70.38) 01/13/2018   19:13:27  ( -68.32,  70.43)    1.94                18
 01/13/2018   20:03:52   (  68.13,-122.08) 01/13/2018   20:02:55  (  68.16,-122.12)    3.22                57
 01/16/2018   10:39:20   (  68.36,  18.77) 01/16/2018   10:40:27  (  68.35,  18.71)    3.09                67
 01/16/2018   11:30:01   ( -68.22,-173.73) 01/16/2018   11:29:57  ( -68.23,-173.79)    2.55                 4
 01/16/2018   12:20:40   (  67.83,  -5.93) 01/16/2018   12:19:28  (  67.90,  -6.53)   26.36                72
 01/19/2018   02:56:13   (  68.34, 134.58) 01/19/2018   02:56:55  (  68.36, 134.61)    2.54                42
 01/19/2018   03:46:54   ( -68.20, -57.92) 01/19/2018   03:46:26  ( -68.19, -57.95)    1.33                28
 01/21/2018   18:22:37   ( -69.23,  81.84) 01/21/2018   18:23:44  ( -69.13,  83.82)   78.96                67
 01/21/2018   19:13:06   (  68.31,-109.61) 01/21/2018   19:13:24  (  68.30,-109.58)    2.35                18
 01/21/2018   20:03:47   ( -68.17,  57.88) 01/21/2018   20:02:54  ( -68.19,  57.93)    3.07                53
 01/24/2018   10:39:14   ( -68.41,-161.27) 01/24/2018   10:40:24  ( -68.40,-161.21)    2.63                70
 01/24/2018   11:29:57   (  68.24,   6.26) 01/24/2018   11:29:52  (  68.23,   6.22)    2.20                 5
 01/24/2018   12:20:36   ( -67.99, 173.89) 01/24/2018   12:19:24  ( -68.01, 173.60)   12.29                72