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   (  68.67, -72.10) 07/16/2021   16:41:48  (  68.69, -72.13)    2.06                39
 07/16/2021   17:31:51   ( -68.59,  95.32) 07/16/2021   17:31:18  ( -68.58,  95.37)    2.53                33
 07/19/2021   08:07:30   ( -69.22,-124.39) 07/19/2021   08:08:41  ( -69.12,-123.35)   42.85                71
 07/19/2021   08:58:06   (  68.66,  43.67) 07/19/2021   08:58:14  (  68.67,  43.73)    2.68                 8
 07/19/2021   09:48:47   ( -68.53,-148.83) 07/19/2021   09:47:45  ( -68.51,-148.83)    2.00                62
 07/22/2021   00:24:18   ( -68.73,  -7.96) 07/22/2021   00:25:14  ( -68.71,  -7.97)    1.60                56
 07/22/2021   01:15:02   (  68.60, 159.52) 07/22/2021   01:14:41  (  68.60, 159.53)    0.61                21
 07/22/2021   02:05:31   ( -67.82, -32.16) 07/22/2021   02:04:22  ( -67.88, -33.69)   64.54                69
 07/24/2021   15:50:48   (  69.66, -60.82) 07/24/2021   15:51:55  (  69.57, -58.61)   85.81                67
 07/24/2021   16:41:13   ( -68.67, 107.89) 07/24/2021   16:41:39  ( -68.69, 107.88)    3.23                26
 07/24/2021   17:31:57   (  68.54, -84.64) 07/24/2021   17:31:07  (  68.52, -84.69)    3.44                50
 07/27/2021   08:07:28   (  68.75,  56.23) 07/27/2021   08:08:35  (  68.77,  56.23)    2.45                67
 07/27/2021   08:58:09   ( -68.60,-136.26) 07/27/2021   08:58:06  ( -68.61,-136.33)    3.02                 3
 07/27/2021   09:48:48   (  68.21,  31.56) 07/27/2021   09:47:36  (  68.32,  30.96)   27.39                72