Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 14.  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)
 07/16/2021   16:41:09   (  68.68, -72.11) 07/16/2021   16:41:48  (  68.68, -72.14)    1.08                39
 07/16/2021   17:31:50   ( -68.55,  95.38) 07/16/2021   17:31:18  ( -68.57,  95.36)    2.68                32
 07/19/2021   08:07:30   ( -69.23,-124.41) 07/19/2021   08:08:41  ( -69.11,-123.36)   43.55                71
 07/19/2021   08:58:06   (  68.67,  43.66) 07/19/2021   08:58:14  (  68.66,  43.72)    2.95                 8
 07/19/2021   09:48:47   ( -68.54,-148.84) 07/19/2021   09:47:44  ( -68.55,-148.78)    3.31                63
 07/22/2021   00:24:18   ( -68.74,  -7.98) 07/22/2021   00:25:13  ( -68.76,  -7.92)    2.84                55
 07/22/2021   01:15:01   (  68.56, 159.57) 07/22/2021   01:14:41  (  68.58, 159.51)    3.26                20
 07/22/2021   02:05:31   ( -67.84, -32.18) 07/22/2021   02:04:22  ( -67.87, -33.71)   64.10                69
 07/24/2021   15:50:49   (  69.68, -60.85) 07/24/2021   15:51:56  (  69.56, -58.63)   86.79                67
 07/24/2021   16:41:14   ( -68.69, 107.86) 07/24/2021   16:41:40  ( -68.68, 107.87)    0.85                26
 07/24/2021   17:31:58   (  68.56, -84.66) 07/24/2021   17:31:07  (  68.56, -84.64)    1.27                51
 07/27/2021   08:07:28   (  68.78,  56.19) 07/27/2021   08:08:35  (  68.75,  56.20)    3.13                67
 07/27/2021   08:58:09   ( -68.63,-136.30) 07/27/2021   08:58:05  ( -68.65,-136.28)    2.05                 4
 07/27/2021   09:48:48   (  68.24,  31.52) 07/27/2021   09:47:36  (  68.30,  30.94)   24.77                72