Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 11.  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)
 07/11/2021   08:07:34   (  69.68,  54.96) 07/11/2021   08:08:41  (  69.57,  57.24)   89.33                67
 07/11/2021   08:57:59   ( -68.69,-136.34) 07/11/2021   08:58:25  ( -68.68,-136.27)    3.19                26
 07/11/2021   09:48:42   (  68.50,  31.21) 07/11/2021   09:47:53  (  68.51,  31.17)    1.83                49
 07/14/2021   00:24:13   (  68.70, 172.09) 07/14/2021   00:25:22  (  68.73, 172.04)    3.15                69
 07/14/2021   01:14:55   ( -68.62, -20.49) 07/14/2021   01:14:52  ( -68.62, -20.46)    1.11                 3
 07/14/2021   02:05:35   (  68.28, 147.27) 07/14/2021   02:04:22  (  68.34, 146.84)   18.88                73
 07/16/2021   16:41:10   (  68.69, -72.13) 07/16/2021   16:41:48  (  68.71, -72.09)    2.88                38
 07/16/2021   17:31:51   ( -68.56,  95.37) 07/16/2021   17:31:19  ( -68.55,  95.34)    1.06                32
 07/19/2021   08:07:30   ( -69.23,-124.42) 07/19/2021   08:08:40  ( -69.15,-123.31)   44.92                70
 07/19/2021   08:58:05   (  68.63,  43.72) 07/19/2021   08:58:14  (  68.64,  43.70)    1.52                 9
 07/19/2021   09:48:47   ( -68.54,-148.85) 07/19/2021   09:47:44  ( -68.54,-148.79)    2.44                63
 07/22/2021   00:24:18   ( -68.74,  -7.98) 07/22/2021   00:25:13  ( -68.74,  -7.94)    1.63                55
 07/22/2021   01:15:02   (  68.62, 159.49) 07/22/2021   01:14:40  (  68.62, 159.56)    2.54                22
 07/22/2021   02:05:31   ( -67.83, -32.18) 07/22/2021   02:04:21  ( -67.91, -33.66)   62.43                70
 07/24/2021   15:50:49   (  69.68, -60.84) 07/24/2021   15:51:56  (  69.54, -58.66)   86.01                67
 07/24/2021   16:41:14   ( -68.68, 107.87) 07/24/2021   16:41:40  ( -68.66, 107.85)    2.08                26
 07/24/2021   17:31:58   (  68.56, -84.66) 07/24/2021   17:31:07  (  68.54, -84.66)    2.39                51