Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 5 21.  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)
 05/22/2019   02:56:07   ( -68.36, -45.46) 05/22/2019   02:57:07  ( -68.38, -45.45)    1.96                60
 05/22/2019   03:46:51   (  68.24, 122.00) 05/22/2019   03:46:35  (  68.22, 122.00)    2.68                16
 05/22/2019   04:37:23   ( -67.62, -69.90) 05/22/2019   04:36:12  ( -67.72, -70.95)   46.04                71
 05/24/2019   19:13:02   ( -68.33,  70.34) 05/24/2019   19:13:35  ( -68.36,  70.40)    3.48                33
 05/24/2019   20:03:46   (  68.21,-122.19) 05/24/2019   20:03:03  (  68.19,-122.16)    3.11                43
 05/27/2019   10:39:21   (  68.67,  18.35) 05/27/2019   10:40:31  (  68.60,  18.94)   24.93                70
 05/27/2019   11:29:57   ( -68.25,-173.78) 05/27/2019   11:30:05  ( -68.27,-173.82)    2.92                 8
 05/27/2019   12:20:41   (  68.13,  -6.33) 05/27/2019   12:19:32  (  68.16,  -6.32)    2.50                69
 05/30/2019   02:56:12   (  68.37, 134.51) 05/30/2019   02:57:03  (  68.39, 134.57)    3.22                51
 05/30/2019   03:46:53   ( -68.22, -57.98) 05/30/2019   03:46:34  ( -68.24, -57.99)    1.37                19
 05/30/2019   04:37:22   (  67.30, 110.46) 05/30/2019   04:36:14  (  67.39, 108.68)   76.88                68
 06/01/2019   19:13:07   (  68.30,-109.63) 06/01/2019   19:13:33  (  68.29,-109.67)    1.94                26
 06/01/2019   20:03:49   ( -68.20,  57.82) 06/01/2019   20:03:03  ( -68.19,  57.85)    1.34                46