Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 11.  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)
 02/12/2021   02:05:12   ( -69.00, -33.59) 02/12/2021   02:06:22  ( -68.91, -32.42)   47.61                70
 02/12/2021   02:55:46   (  68.35, 134.59) 02/12/2021   02:55:57  (  68.35, 134.54)    2.39                11
 02/12/2021   03:46:28   ( -68.26, -57.98) 02/12/2021   03:45:27  ( -68.24, -57.96)    1.71                61
 02/14/2021   18:21:57   ( -68.46,  82.90) 02/14/2021   18:22:57  ( -68.46,  82.91)    0.19                60
 02/14/2021   19:12:41   (  68.35,-109.64) 02/14/2021   19:12:24  (  68.35,-109.59)    1.92                17
 02/14/2021   20:03:13   ( -67.72,  58.47) 02/14/2021   20:02:02  ( -67.80,  57.40)   46.02                71
 02/17/2021   10:38:51   ( -68.41,-161.25) 02/17/2021   10:39:25  ( -68.40,-161.29)    1.72                34
 02/17/2021   11:29:35   (  68.29,   6.20) 02/17/2021   11:28:52  (  68.28,   6.21)    1.45                43
 02/20/2021   02:05:08   (  68.72, 146.79) 02/20/2021   02:06:19  (  68.65, 147.27)   20.76                71
 02/20/2021   02:55:46   ( -68.41, -45.48) 02/20/2021   02:55:52  ( -68.39, -45.42)    3.56                 6
 02/20/2021   03:46:29   (  68.24, 122.04) 02/20/2021   03:45:19  (  68.26, 122.08)    3.08                70
 02/22/2021   18:21:57   (  68.45, -97.09) 02/22/2021   18:22:48  (  68.47, -97.07)    1.69                51
 02/22/2021   19:12:38   ( -68.30,  70.42) 02/22/2021   19:12:19  ( -68.32,  70.38)    2.30                19
 02/22/2021   20:03:07   (  67.38,-121.13) 02/22/2021   20:01:59  (  67.46,-122.96)   79.01                68