Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 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)
 07/19/2021   08:07:31   ( -69.26,-124.45) 07/19/2021   08:08:41  ( -69.13,-123.33)   46.64                70
 07/19/2021   08:58:06   (  68.65,  43.69) 07/19/2021   08:58:15  (  68.63,  43.68)    2.56                 9
 07/19/2021   09:48:47   ( -68.52,-148.82) 07/19/2021   09:47:45  ( -68.52,-148.82)    0.20                62
 07/22/2021   00:24:17   ( -68.72,  -7.95) 07/22/2021   00:25:13  ( -68.72,  -7.96)    0.76                56
 07/22/2021   01:15:01   (  68.59, 159.53) 07/22/2021   01:14:40  (  68.61, 159.54)    1.73                21
 07/22/2021   02:05:30   ( -67.81, -32.15) 07/22/2021   02:04:21  ( -67.89, -33.68)   64.78                69
 07/24/2021   15:50:48   (  69.65, -60.80) 07/24/2021   15:51:55  (  69.58, -58.60)   85.65                67
 07/24/2021   16:41:14   ( -68.72, 107.83) 07/24/2021   16:41:39  ( -68.70, 107.89)    3.04                25
 07/24/2021   17:31:57   (  68.53, -84.62) 07/24/2021   17:31:07  (  68.53, -84.68)    2.31                50
 07/27/2021   08:07:28   (  68.74,  56.24) 07/27/2021   08:08:35  (  68.78,  56.24)    3.65                67
 07/27/2021   08:58:09   ( -68.60,-136.26) 07/27/2021   08:58:06  ( -68.62,-136.32)    3.19                 3
 07/27/2021   09:48:49   (  68.26,  31.49) 07/27/2021   09:47:37  (  68.27,  30.90)   24.33                72
 07/30/2021   00:24:24   (  68.69, 172.07) 07/30/2021   00:25:02  (  68.69, 172.01)    2.52                38
 07/30/2021   01:15:06   ( -68.60, -20.49) 07/30/2021   01:14:32  ( -68.59, -20.48)    1.38                34