Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 6 17.  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)
 06/17/2021   08:57:41   (  68.67,  43.74) 06/17/2021   08:58:49  (  68.65,  43.70)    2.13                68
 06/17/2021   09:48:22   ( -68.52,-148.75) 06/17/2021   09:48:19  ( -68.54,-148.80)    3.00                 3
 06/17/2021   10:39:02   (  68.19,  18.99) 06/17/2021   10:37:50  (  68.21,  18.44)   23.00                72
 06/20/2021   01:14:37   (  68.64, 159.54) 06/20/2021   01:15:15  (  68.64, 159.56)    0.68                38
 06/20/2021   02:05:18   ( -68.49, -32.95) 06/20/2021   02:04:46  ( -68.48, -33.01)    3.09                32
 06/22/2021   16:40:59   ( -69.21, 107.22) 06/22/2021   16:42:09  ( -69.07, 108.33)   46.96                70
 06/22/2021   17:31:34   (  68.61, -84.66) 06/22/2021   17:31:42  (  68.61, -84.59)    2.83                 8
 06/22/2021   18:22:15   ( -68.47,  82.85) 06/22/2021   18:21:13  ( -68.46,  82.85)    1.12                62
 06/25/2021   08:57:46   ( -68.65,-136.26) 06/25/2021   08:58:43  ( -68.65,-136.31)    2.09                57
 06/25/2021   09:48:30   (  68.54,  31.20) 06/25/2021   09:48:10  (  68.53,  31.19)    1.10                20
 06/25/2021   10:39:00   ( -67.80,-160.54) 06/25/2021   10:37:50  ( -67.87,-161.96)   60.27                70
 06/28/2021   00:24:18   (  69.64, 170.82) 06/28/2021   00:25:25  (  69.55, 173.10)   88.93                67
 06/28/2021   01:14:43   ( -68.63, -20.47) 06/28/2021   01:15:10  ( -68.62, -20.47)    1.05                27
 06/28/2021   02:05:27   (  68.52, 146.99) 06/28/2021   02:04:37  (  68.50, 147.03)    2.73                50
 06/30/2021   16:40:57   (  68.71, -72.13) 06/30/2021   16:42:05  (  68.74, -72.08)    3.25                68
 06/30/2021   17:31:38   ( -68.56,  95.39) 06/30/2021   17:31:36  ( -68.59,  95.37)    3.09                 2
 06/30/2021   18:22:18   (  68.23, -96.87) 06/30/2021   18:21:06  (  68.29, -97.34)   20.38                72