Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 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)
 12/13/2019   10:39:06   ( -68.41,-161.22) 12/13/2019   10:40:00  ( -68.41,-161.23)    0.60                54
 12/13/2019   11:29:50   (  68.28,   6.25) 12/13/2019   11:29:28  (  68.25,   6.23)    2.56                22
 12/13/2019   12:20:18   ( -67.45, 174.60) 12/13/2019   12:19:09  ( -67.52, 173.01)   67.92                69
 12/16/2019   02:55:59   ( -68.38, -45.41) 12/16/2019   02:56:30  ( -68.38, -45.39)    1.08                31
 12/16/2019   03:46:43   (  68.25, 122.06) 12/16/2019   03:45:58  (  68.22, 122.07)    3.43                45
 12/18/2019   18:22:16   (  68.76, -97.46) 12/18/2019   18:23:27  (  68.65, -96.82)   28.75                71
 12/18/2019   19:12:51   ( -68.30,  70.47) 12/18/2019   19:13:01  ( -68.31,  70.41)    2.90                10
 12/18/2019   20:03:35   (  68.17,-122.07) 12/18/2019   20:02:28  (  68.20,-122.08)    3.26                67
 12/21/2019   10:39:02   (  68.42,  18.77) 12/21/2019   10:40:00  (  68.42,  18.78)    0.96                58
 12/21/2019   11:29:43   ( -68.27,-173.73) 12/21/2019   11:29:31  ( -68.26,-173.78)    2.61                12
 12/21/2019   12:20:17   (  67.61,  -5.60) 12/21/2019   12:19:07  (  67.64,  -6.85)   52.95                70
 12/24/2019   02:55:55   (  68.40, 134.57) 12/24/2019   02:56:31  (  68.38, 134.61)    2.36                36
 12/24/2019   03:46:36   ( -68.25, -57.92) 12/24/2019   03:46:02  ( -68.22, -57.95)    3.07                34
 12/26/2019   18:22:16   ( -69.13,  82.05) 12/26/2019   18:23:25  ( -69.03,  83.65)   64.26                69
 12/26/2019   19:12:47   (  68.33,-109.56) 12/26/2019   19:13:03  (  68.31,-109.61)    2.83                16
 12/26/2019   20:03:29   ( -68.23,  57.88) 12/26/2019   20:02:33  ( -68.20,  57.91)    2.92                56