Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 4 12.  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)
 04/14/2015   07:21:42   (  68.99,  68.87) 04/14/2015   07:22:41  (  68.98,  68.86)    0.49                59
 04/14/2015   08:12:23   ( -68.85,-123.63) 04/14/2015   08:12:11  ( -68.87,-123.65)    2.91                12
 04/14/2015   09:02:57   (  68.19,  44.54) 04/14/2015   09:01:47  (  68.26,  43.24)   53.98                70
 04/16/2015   23:38:32   (  68.95,-175.30) 04/16/2015   23:39:08  (  68.95,-175.29)    0.65                36
 04/17/2015   00:29:14   ( -68.86,  -7.86) 04/17/2015   00:28:38  ( -68.84,  -7.79)    3.23                36
 04/19/2015   15:04:50   ( -69.66, 132.16) 04/19/2015   15:05:59  ( -69.51, 133.69)   61.42                69
 04/19/2015   15:55:22   (  68.91, -59.47) 04/19/2015   15:55:35  (  68.89, -59.47)    2.00                13
 04/19/2015   16:46:03   ( -68.77, 108.04) 04/19/2015   16:45:05  ( -68.79, 108.03)    2.28                58
 04/22/2015   07:21:28   ( -68.99,-111.11) 04/22/2015   07:22:34  ( -68.99,-111.10)    0.81                66
 04/22/2015   08:12:12   (  68.88,  56.35) 04/22/2015   08:12:01  (  68.86,  56.39)    2.49                11
 04/22/2015   09:02:48   ( -68.47,-135.79) 04/22/2015   09:01:36  ( -68.49,-136.45)   26.96                72
 04/24/2015   23:38:16   ( -68.91,   4.78) 04/24/2015   23:38:59  ( -68.93,   4.73)    2.99                43
 04/25/2015   00:29:00   (  68.80, 172.23) 04/25/2015   00:28:26  (  68.81, 172.22)    0.92                34