Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 4 15.  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)
 04/17/2019   11:29:36   (  68.30,   6.24) 04/17/2019   11:30:05  (  68.28,   6.21)    1.91                29
 04/17/2019   12:20:17   ( -68.16, 173.74) 04/17/2019   12:19:35  ( -68.17, 173.71)    2.13                42
 04/20/2019   02:55:54   ( -68.68, -45.81) 04/20/2019   02:57:05  ( -68.58, -45.20)   26.90                71
 04/20/2019   03:46:32   (  68.24, 122.08) 04/20/2019   03:46:36  (  68.25, 122.04)    2.23                 4
 04/20/2019   04:37:14   ( -68.15, -70.49) 04/20/2019   04:36:06  ( -68.14, -70.45)    1.60                68
 04/22/2019   19:12:44   ( -68.35,  70.38) 04/22/2019   19:13:39  ( -68.35,  70.39)    0.24                55
 04/22/2019   20:03:28   (  68.24,-122.16) 04/22/2019   20:03:06  (  68.24,-122.10)    2.46                22
 04/22/2019   20:53:57   ( -67.44,  46.14) 04/22/2019   20:52:47  ( -67.52,  44.70)   61.95                70
 04/25/2019   11:29:40   ( -68.30,-173.78) 04/25/2019   11:30:11  ( -68.31,-173.79)    1.72                31
 04/25/2019   12:20:24   (  68.18,  -6.32) 04/25/2019   12:19:38  (  68.20,  -6.28)    2.44                46
 04/28/2019   02:55:59   (  68.61, 134.26) 04/28/2019   02:57:10  (  68.56, 134.74)   20.50                71
 04/28/2019   03:46:37   ( -68.29, -58.01) 04/28/2019   03:46:43  ( -68.29, -57.95)    2.57                 6
 04/28/2019   04:37:20   (  68.13, 109.51) 04/28/2019   04:36:11  (  68.12, 109.49)    1.41                69