Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 13.  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)
 03/13/2021   09:48:20   ( -69.42,-149.93) 03/13/2021   09:49:27  ( -69.34,-147.77)   85.29                67
 03/13/2021   10:38:48   (  68.43,  18.72) 03/13/2021   10:39:08  (  68.45,  18.76)    3.31                20
 03/13/2021   11:29:29   ( -68.30,-173.80) 03/13/2021   11:28:39  ( -68.29,-173.81)    1.53                50
 03/16/2021   02:04:58   ( -68.53, -32.95) 03/16/2021   02:06:09  ( -68.52, -32.93)    1.84                71
 03/16/2021   02:55:42   (  68.40, 134.53) 03/16/2021   02:55:36  (  68.40, 134.58)    2.03                 6
 03/16/2021   03:46:21   ( -68.16, -57.85) 03/16/2021   03:45:08  ( -68.19, -58.05)    8.69                73
 03/18/2021   18:21:51   ( -68.45,  82.93) 03/18/2021   18:22:37  ( -68.47,  82.89)    2.39                46
 03/18/2021   19:12:35   (  68.32,-109.59) 03/18/2021   19:12:04  (  68.35,-109.61)    3.18                31
 03/18/2021   20:02:58   ( -67.22,  59.08) 03/18/2021   20:01:51  ( -67.30,  56.82)   97.63                67
 03/21/2021   09:48:16   (  69.20,  30.37) 03/21/2021   09:49:25  (  69.07,  31.89)   61.79                69
 03/21/2021   10:38:45   ( -68.43,-161.26) 03/21/2021   10:39:05  ( -68.41,-161.30)    2.54                20
 03/21/2021   11:29:29   (  68.30,   6.21) 03/21/2021   11:28:32  (  68.29,   6.20)    1.20                57
 03/24/2021   02:04:56   (  68.48, 147.12) 03/24/2021   02:06:01  (  68.50, 147.06)    3.00                65
 03/24/2021   02:55:38   ( -68.40, -45.46) 03/24/2021   02:55:31  ( -68.40, -45.43)    1.07                 7
 03/24/2021   03:46:15   (  67.90, 122.49) 03/24/2021   03:45:04  (  67.94, 121.67)   34.55                71
 03/26/2021   18:21:50   (  68.47, -97.08) 03/26/2021   18:22:28  (  68.48, -97.08)    1.97                38
 03/26/2021   19:12:31   ( -68.33,  70.42) 03/26/2021   19:11:59  ( -68.33,  70.37)    2.03                32