Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 18.  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)
 03/18/2021   18:21:51   ( -68.46,  82.93) 03/18/2021   18:22:37  ( -68.46,  82.88)    1.93                46
 03/18/2021   19:12:36   (  68.37,-109.66) 03/18/2021   19:12:04  (  68.35,-109.61)    3.25                32
 03/18/2021   20:02:58   ( -67.22,  59.07) 03/18/2021   20:01:51  ( -67.29,  56.81)   97.61                67
 03/21/2021   09:48:16   (  69.20,  30.37) 03/21/2021   09:49:25  (  69.07,  31.89)   61.75                69
 03/21/2021   10:38:45   ( -68.43,-161.27) 03/21/2021   10:39:04  ( -68.46,-161.24)    3.34                19
 03/21/2021   11:29:29   (  68.30,   6.21) 03/21/2021   11:28:32  (  68.29,   6.20)    0.96                57
 03/24/2021   02:04:56   (  68.49, 147.12) 03/24/2021   02:06:01  (  68.50, 147.06)    2.87                65
 03/24/2021   02:55:38   ( -68.41, -45.47) 03/24/2021   02:55:31  ( -68.40, -45.44)    1.95                 7
 03/24/2021   03:46:15   (  67.90, 122.49) 03/24/2021   03:45:04  (  67.94, 121.67)   34.41                71
 03/26/2021   18:21:50   (  68.47, -97.09) 03/26/2021   18:22:28  (  68.49, -97.08)    1.54                38
 03/26/2021   19:12:31   ( -68.34,  70.40) 03/26/2021   19:11:59  ( -68.33,  70.36)    2.07                32
 03/29/2021   09:48:10   ( -69.12,-149.49) 03/29/2021   09:49:20  ( -69.03,-148.17)   53.59                70
 03/29/2021   10:38:43   (  68.41,  18.77) 03/29/2021   10:38:56  (  68.41,  18.71)    2.71                13
 03/29/2021   11:29:25   ( -68.32,-173.80) 03/29/2021   11:28:26  ( -68.31,-173.78)    1.95                59
 04/01/2021   02:04:53   ( -68.52, -32.91) 04/01/2021   02:05:56  ( -68.51, -32.94)    1.96                63
 04/01/2021   02:55:37   (  68.40, 134.56) 04/01/2021   02:55:23  (  68.38, 134.55)    1.75                14