Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 6 4.  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)
 06/06/2021   17:31:21   (  68.60, -84.60) 06/06/2021   17:31:56  (  68.58, -84.62)    1.60                35
 06/06/2021   18:22:03   ( -68.50,  82.84) 06/06/2021   18:21:26  ( -68.48,  82.88)    3.23                37
 06/09/2021   08:57:41   ( -69.09,-136.80) 06/09/2021   08:58:52  ( -68.93,-135.96)   37.94                71
 06/09/2021   09:48:17   (  68.54,  31.24) 06/09/2021   09:48:24  (  68.53,  31.19)    2.31                 7
 06/09/2021   10:38:59   ( -68.45,-161.32) 06/09/2021   10:37:54  ( -68.43,-161.30)    2.32                65
 06/12/2021   01:14:30   ( -68.66, -20.46) 06/12/2021   01:15:24  ( -68.65, -20.43)    1.57                54
 06/12/2021   02:05:14   (  68.55, 147.00) 06/12/2021   02:04:51  (  68.53, 147.07)    3.54                23
 06/12/2021   02:55:42   ( -67.70, -44.61) 06/12/2021   02:54:33  ( -67.76, -46.20)   67.74                69
 06/14/2021   16:41:00   (  69.62, -73.35) 06/14/2021   16:42:06  (  69.52, -71.06)   89.26                66
 06/14/2021   17:31:25   ( -68.61,  95.37) 06/14/2021   17:31:51  ( -68.59,  95.38)    1.81                26
 06/14/2021   18:22:08   (  68.44, -97.10) 06/14/2021   18:21:18  (  68.47, -97.13)    2.63                50
 06/17/2021   08:57:39   (  68.66,  43.75) 06/17/2021   08:58:48  (  68.68,  43.73)    1.81                69
 06/17/2021   09:48:21   ( -68.56,-148.79) 06/17/2021   09:48:18  ( -68.58,-148.75)    3.18                 3
 06/17/2021   10:39:01   (  68.24,  18.93) 06/17/2021   10:37:48  (  68.29,  18.53)   17.45                73