Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 1 5.  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)
 01/05/2021   18:22:04   (  68.84, -97.57) 01/05/2021   18:23:14  (  68.74, -96.75)   35.31                70
 01/05/2021   19:12:38   ( -68.33,  70.42) 01/05/2021   19:12:49  ( -68.34,  70.41)    1.79                11
 01/05/2021   20:03:22   (  68.21,-122.11) 01/05/2021   20:02:17  (  68.18,-122.14)    3.15                65
 01/08/2021   10:38:52   (  68.44,  18.73) 01/08/2021   10:39:47  (  68.46,  18.79)    3.45                55
 01/08/2021   11:29:33   ( -68.30,-173.77) 01/08/2021   11:29:18  ( -68.30,-173.77)    0.30                15
 01/08/2021   12:20:05   (  67.53,  -5.50) 01/08/2021   12:18:56  (  67.57,  -6.97)   62.64                69
 01/11/2021   02:55:46   (  68.36, 134.60) 01/11/2021   02:56:17  (  68.35, 134.54)    2.97                31
 01/11/2021   03:46:28   ( -68.27, -57.96) 01/11/2021   03:45:47  ( -68.24, -57.96)    2.45                41
 01/13/2021   18:22:03   ( -68.77,  82.52) 01/13/2021   18:23:14  ( -68.68,  83.18)   28.17                71
 01/13/2021   19:12:41   (  68.34,-109.60) 01/13/2021   19:12:45  (  68.34,-109.59)    0.88                 4
 01/13/2021   20:03:22   ( -68.19,  57.91) 01/13/2021   20:02:16  ( -68.19,  57.85)    2.34                66
 01/16/2021   10:38:51   ( -68.43,-161.25) 01/16/2021   10:39:46  ( -68.40,-161.29)    3.25                55
 01/16/2021   11:29:34   (  68.26,   6.26) 01/16/2021   11:29:13  (  68.28,   6.21)    2.70                21
 01/16/2021   12:20:04   ( -67.52, 174.51) 01/16/2021   12:18:54  ( -67.57, 173.02)   63.49                70
 01/19/2021   02:05:22   (  69.47, 145.76) 01/19/2021   02:06:28  (  69.37, 148.19)   95.47                66
 01/19/2021   02:55:46   ( -68.41, -45.46) 01/19/2021   02:56:14  ( -68.39, -45.42)    2.55                28
 01/19/2021   03:46:29   (  68.25, 122.05) 01/19/2021   03:45:41  (  68.26, 122.07)    1.97                48