Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 1 8.  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   (  68.45,  18.72) 01/08/2021   10:39:47  (  68.45,  18.78)    2.49                55
 01/08/2021   11:29:33   ( -68.31,-173.78) 01/08/2021   11:29:18  ( -68.28,-173.79)    2.73                15
 01/08/2021   12:20:05   (  67.54,  -5.51) 01/08/2021   12:18:56  (  67.56,  -6.98)   62.57                69
 01/11/2021   02:55:46   (  68.37, 134.59) 01/11/2021   02:56:16  (  68.40, 134.59)    3.44                30
 01/11/2021   03:46:28   ( -68.28, -57.97) 01/11/2021   03:45:46  ( -68.29, -57.90)    3.04                42
 01/13/2021   18:22:03   ( -68.78,  82.51) 01/13/2021   18:23:14  ( -68.67,  83.17)   28.60                71
 01/13/2021   19:12:41   (  68.34,-109.60) 01/13/2021   19:12:45  (  68.34,-109.60)    0.32                 4
 01/13/2021   20:03:22   ( -68.19,  57.90) 01/13/2021   20:02:16  ( -68.18,  57.84)    3.13                66
 01/16/2021   10:38:52   ( -68.43,-161.26) 01/16/2021   10:39:46  ( -68.45,-161.23)    2.37                54
 01/16/2021   11:29:35   (  68.26,   6.27) 01/16/2021   11:29:14  (  68.27,   6.20)    2.88                21
 01/16/2021   12:20:05   ( -67.52, 174.50) 01/16/2021   12:18:55  ( -67.56, 173.01)   63.82                70
 01/19/2021   02:05:22   (  69.47, 145.77) 01/19/2021   02:06:28  (  69.37, 148.18)   94.78                66
 01/19/2021   02:55:46   ( -68.40, -45.45) 01/19/2021   02:56:14  ( -68.38, -45.43)    2.37                28
 01/19/2021   03:46:29   (  68.24, 122.06) 01/19/2021   03:45:41  (  68.26, 122.07)    2.32                48
 01/21/2021   18:22:00   (  68.54, -97.18) 01/21/2021   18:23:11  (  68.52, -97.02)    6.85                71
 01/21/2021   19:12:40   ( -68.32,  70.41) 01/21/2021   19:12:43  ( -68.31,  70.36)    2.53                 3
 01/21/2021   20:03:23   (  68.16,-122.07) 01/21/2021   20:02:10  (  68.19,-122.14)    3.63                73