Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 14.  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)
 02/14/2021   18:21:57   ( -68.46,  82.91) 02/14/2021   18:22:57  ( -68.46,  82.91)    0.34                60
 02/14/2021   19:12:41   (  68.34,-109.63) 02/14/2021   19:12:24  (  68.35,-109.58)    2.34                17
 02/14/2021   20:03:13   ( -67.71,  58.47) 02/14/2021   20:02:02  ( -67.80,  57.40)   46.20                71
 02/17/2021   10:38:51   ( -68.41,-161.25) 02/17/2021   10:39:25  ( -68.40,-161.29)    1.65                34
 02/17/2021   11:29:35   (  68.29,   6.21) 02/17/2021   11:28:52  (  68.28,   6.22)    0.48                43
 02/20/2021   02:05:08   (  68.72, 146.79) 02/20/2021   02:06:19  (  68.66, 147.27)   20.52                71
 02/20/2021   02:55:45   ( -68.36, -45.42) 02/20/2021   02:55:52  ( -68.39, -45.42)    3.40                 7
 02/20/2021   03:46:29   (  68.24, 122.04) 02/20/2021   03:45:20  (  68.21, 122.01)    3.23                69
 02/22/2021   18:21:57   (  68.45, -97.09) 02/22/2021   18:22:48  (  68.47, -97.07)    1.65                51
 02/22/2021   19:12:38   ( -68.31,  70.42) 02/22/2021   19:12:19  ( -68.31,  70.37)    1.95                19
 02/22/2021   20:03:07   (  67.38,-121.13) 02/22/2021   20:01:59  (  67.46,-122.97)   79.01                68
 02/25/2021   09:48:26   ( -69.54,-150.11) 02/25/2021   09:49:32  ( -69.45,-147.59)   98.94                66
 02/25/2021   10:38:51   (  68.41,  18.74) 02/25/2021   10:39:16  (  68.39,  18.71)    2.99                25
 02/25/2021   11:29:32   ( -68.26,-173.75) 02/25/2021   11:28:46  ( -68.29,-173.77)    3.07                46
 02/28/2021   02:05:03   ( -68.59, -33.03) 02/28/2021   02:06:15  ( -68.54, -32.87)    8.72                72
 02/28/2021   02:55:45   (  68.37, 134.57) 02/28/2021   02:55:43  (  68.35, 134.56)    1.63                 2