Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 5 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)
 05/16/2021   09:47:59   ( -68.59,-148.76) 05/16/2021   09:48:51  ( -68.57,-148.79)    2.44                52
 05/16/2021   10:38:43   (  68.46,  18.71) 05/16/2021   10:38:18  (  68.46,  18.73)    0.74                25
 05/16/2021   11:29:10   ( -67.57,-172.85) 05/16/2021   11:28:01  ( -67.62,-174.62)   75.25                69
 05/19/2021   01:14:28   (  69.41, 158.56) 05/19/2021   01:15:36  (  69.30, 160.39)   72.81                68
 05/19/2021   02:04:55   ( -68.51, -32.90) 05/19/2021   02:05:18  ( -68.52, -32.96)    2.53                23
 05/19/2021   02:55:39   (  68.39, 134.57) 05/19/2021   02:54:45  (  68.41, 134.55)    1.86                54
 05/21/2021   17:31:11   (  68.65, -84.63) 05/21/2021   17:32:14  (  68.63, -84.57)    2.75                63
 05/21/2021   18:21:52   ( -68.50,  82.88) 05/21/2021   18:21:45  ( -68.47,  82.86)    3.06                 7
 05/21/2021   19:12:29   (  68.00,-109.17) 05/21/2021   19:11:17  (  68.07,-109.97)   33.89                72
 05/24/2021   09:48:07   (  68.58,  31.22) 05/24/2021   09:48:41  (  68.57,  31.23)    1.59                34
 05/24/2021   10:38:48   ( -68.43,-161.27) 05/24/2021   10:38:12  ( -68.42,-161.32)    2.98                36
 05/27/2021   01:14:24   ( -68.96, -20.83) 05/27/2021   01:15:36  ( -68.85, -20.18)   28.32                72
 05/27/2021   02:05:02   (  68.53, 147.06) 05/27/2021   02:05:07  (  68.51, 147.04)    2.37                 5
 05/27/2021   02:55:44   ( -68.43, -45.49) 05/27/2021   02:54:37  ( -68.41, -45.45)    2.49                67
 05/29/2021   17:31:15   ( -68.63,  95.37) 05/29/2021   17:32:06  ( -68.62,  95.41)    2.03                51
 05/29/2021   18:21:58   (  68.47, -97.11) 05/29/2021   18:21:33  (  68.49, -97.10)    2.21                25
 05/29/2021   19:12:25   ( -67.56,  71.36) 05/29/2021   19:11:17  ( -67.62,  69.51)   78.47                68