Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 1 15.  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)
 01/16/2021   10:38:51   ( -68.40,-161.22) 01/16/2021   10:39:46  ( -68.42,-161.27)    2.90                55
 01/16/2021   11:29:35   (  68.28,   6.24) 01/16/2021   11:29:13  (  68.31,   6.24)    3.31                22
 01/16/2021   12:20:04   ( -67.49, 174.54) 01/16/2021   12:18:55  ( -67.53, 172.97)   66.64                69
 01/19/2021   02:05:23   (  69.48, 145.75) 01/19/2021   02:06:29  (  69.35, 148.15)   95.32                66
 01/19/2021   02:55:46   ( -68.37, -45.42) 01/19/2021   02:56:15  ( -68.35, -45.47)    3.16                29
 01/19/2021   03:46:30   (  68.26, 122.04) 01/19/2021   03:45:42  (  68.24, 122.04)    2.16                48
 01/21/2021   18:22:01   (  68.56, -97.21) 01/21/2021   18:23:11  (  68.55, -96.98)    9.18                70
 01/21/2021   19:12:41   ( -68.35,  70.38) 01/21/2021   19:12:43  ( -68.34,  70.39)    1.78                 2
 01/21/2021   20:03:24   (  68.18,-122.10) 01/21/2021   20:02:10  (  68.22,-122.11)    3.75                74
 01/24/2021   10:38:53   (  68.43,  18.72) 01/24/2021   10:39:40  (  68.41,  18.73)    1.92                47
 01/24/2021   11:29:34   ( -68.28,-173.76) 01/24/2021   11:29:11  ( -68.26,-173.82)    3.42                23
 01/24/2021   12:20:00   (  67.19,  -5.12) 01/24/2021   12:18:54  (  67.24,  -7.34)   95.61                66
 01/27/2021   02:05:20   ( -69.37, -34.10) 01/27/2021   02:06:27  ( -69.28, -31.94)   85.28                67
 01/27/2021   02:55:47   (  68.36, 134.58) 01/27/2021   02:56:08  (  68.38, 134.57)    2.37                21
 01/27/2021   03:46:29   ( -68.26, -57.97) 01/27/2021   03:45:39  ( -68.23, -57.98)    3.22                50