Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 12 10.  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)
 12/10/2018   10:39:40   ( -68.37,-161.27) 12/10/2018   10:40:30  ( -68.36,-161.30)    1.66                50
 12/10/2018   11:30:24   (  68.25,   6.19) 12/10/2018   11:29:57  (  68.26,   6.22)    1.64                27
 12/10/2018   12:20:50   ( -67.30, 174.67) 12/10/2018   12:19:42  ( -67.31, 172.77)   81.84                68
 12/13/2018   02:06:11   (  69.43, 145.74) 12/13/2018   02:07:17  (  69.29, 148.11)   94.00                66
 12/13/2018   02:56:35   ( -68.37, -45.51) 12/13/2018   02:57:02  ( -68.35, -45.44)    3.61                27
 12/13/2018   03:47:18   (  68.20, 122.03) 12/13/2018   03:46:30  (  68.19, 122.01)    1.13                48
 12/15/2018   18:22:52   (  68.68, -97.46) 12/15/2018   18:24:03  (  68.58, -96.93)   24.49                71
 12/15/2018   19:13:29   ( -68.32,  70.33) 12/15/2018   19:13:36  ( -68.31,  70.37)    2.38                 7
 12/15/2018   20:04:12   (  68.15,-122.15) 12/15/2018   20:03:04  (  68.14,-122.18)    1.71                68
 12/18/2018   10:39:41   (  68.37,  18.72) 12/18/2018   10:40:41  (  68.38,  18.69)    1.85                60
 12/18/2018   11:30:23   ( -68.28,-173.84) 12/18/2018   11:30:11  ( -68.29,-173.79)    2.68                12
 12/18/2018   12:20:57   (  67.62,  -5.72) 12/18/2018   12:19:47  (  67.67,  -6.87)   48.99                70
 12/21/2018   02:56:35   (  68.38, 134.47) 12/21/2018   02:57:16  (  68.38, 134.53)    2.62                41
 12/21/2018   03:47:16   ( -68.23, -58.02) 12/21/2018   03:46:47  ( -68.24, -58.01)    0.69                29
 12/23/2018   19:13:29   (  68.34,-109.71) 12/23/2018   19:13:54  (  68.34,-109.67)    1.69                25
 12/23/2018   20:04:10   ( -68.19,  57.81) 12/23/2018   20:03:25  ( -68.20,  57.80)    1.68                45