Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 1 24.  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)
 01/24/2021   10:38:53   (  68.41,  18.75) 01/24/2021   10:39:41  (  68.39,  18.70)    3.26                48
 01/24/2021   11:29:34   ( -68.26,-173.74) 01/24/2021   11:29:11  ( -68.28,-173.81)    2.90                23
 01/24/2021   12:20:01   (  67.22,  -5.16) 01/24/2021   12:18:54  (  67.27,  -7.31)   92.62                67
 01/27/2021   02:05:20   ( -69.36, -34.08) 01/27/2021   02:06:27  ( -69.30, -31.92)   85.24                67
 01/27/2021   02:55:47   (  68.34, 134.61) 01/27/2021   02:56:09  (  68.36, 134.54)    3.55                22
 01/27/2021   03:46:29   ( -68.25, -57.95) 01/27/2021   03:45:39  ( -68.25, -57.95)    0.59                50
 01/29/2021   18:21:57   ( -68.44,  82.94) 01/29/2021   18:23:09  ( -68.44,  82.88)    2.55                72
 01/29/2021   19:12:41   (  68.33,-109.61) 01/29/2021   19:12:36  (  68.33,-109.62)    0.49                 5
 01/29/2021   20:03:21   ( -68.12,  57.97) 01/29/2021   20:02:07  ( -68.17,  57.83)    7.66                74
 02/01/2021   10:38:52   ( -68.43,-161.27) 02/01/2021   10:39:37  ( -68.41,-161.28)    2.25                45
 02/01/2021   11:29:35   (  68.27,   6.24) 02/01/2021   11:29:04  (  68.29,   6.22)    2.80                31
 02/04/2021   02:05:16   (  69.11, 146.26) 02/04/2021   02:06:25  (  69.03, 147.73)   59.38                69
 02/04/2021   02:55:46   ( -68.37, -45.42) 02/04/2021   02:56:05  ( -68.37, -45.45)    0.99                19
 02/04/2021   03:46:30   (  68.26, 122.02) 02/04/2021   03:45:32  (  68.25, 122.05)    1.83                58
 02/06/2021   18:21:59   (  68.47, -97.10) 02/06/2021   18:23:02  (  68.48, -97.07)    1.97                63
 02/06/2021   19:12:40   ( -68.31,  70.42) 02/06/2021   19:12:33  ( -68.33,  70.38)    2.69                 7
 02/06/2021   20:03:17   (  67.82,-121.66) 02/06/2021   20:02:06  (  67.87,-122.51)   36.08                71