Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 1 6.  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)
 01/08/2021   10:38:52   (  68.44,  18.73) 01/08/2021   10:39:47  (  68.46,  18.79)    3.49                55
 01/08/2021   11:29:33   ( -68.30,-173.77) 01/08/2021   11:29:18  ( -68.30,-173.77)    0.36                15
 01/08/2021   12:20:05   (  67.53,  -5.50) 01/08/2021   12:18:56  (  67.57,  -6.97)   62.66                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)    2.62                41
 01/13/2021   18:22:03   ( -68.77,  82.52) 01/13/2021   18:23:14  ( -68.68,  83.18)   28.15                71
 01/13/2021   19:12:41   (  68.34,-109.60) 01/13/2021   19:12:45  (  68.34,-109.59)    0.99                 4
 01/13/2021   20:03:22   ( -68.19,  57.91) 01/13/2021   20:02:16  ( -68.19,  57.85)    2.39                66
 01/16/2021   10:38:51   ( -68.43,-161.25) 01/16/2021   10:39:46  ( -68.40,-161.29)    3.28                55
 01/16/2021   11:29:34   (  68.26,   6.27) 01/16/2021   11:29:13  (  68.28,   6.21)    2.92                21
 01/16/2021   12:20:04   ( -67.52, 174.51) 01/16/2021   12:18:54  ( -67.56, 173.02)   63.57                70
 01/19/2021   02:05:22   (  69.47, 145.77) 01/19/2021   02:06:28  (  69.37, 148.19)   95.30                66
 01/19/2021   02:55:46   ( -68.40, -45.46) 01/19/2021   02:56:14  ( -68.39, -45.43)    2.35                28
 01/19/2021   03:46:29   (  68.24, 122.06) 01/19/2021   03:45:41  (  68.26, 122.07)    2.26                48