Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 10.  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   (  69.69,  54.94) 07/11/2021   08:08:40  (  69.61,  57.29)   91.78                66
 07/11/2021   08:57:58   ( -68.65,-136.29) 07/11/2021   08:58:25  ( -68.66,-136.29)    1.21                27
 07/11/2021   09:48:42   (  68.52,  31.19) 07/11/2021   09:47:53  (  68.49,  31.15)    3.35                49
 07/14/2021   00:24:13   (  68.72, 172.07) 07/14/2021   00:25:22  (  68.71, 172.02)    2.29                69
 07/14/2021   01:14:54   ( -68.58, -20.43) 07/14/2021   01:14:52  ( -68.60, -20.48)    2.86                 2
 07/14/2021   02:05:34   (  68.24, 147.32) 07/14/2021   02:04:22  (  68.32, 146.82)   22.47                72
 07/16/2021   16:41:10   (  68.71, -72.15) 07/16/2021   16:41:48  (  68.70, -72.12)    1.98                38
 07/16/2021   17:31:51   ( -68.57,  95.35) 07/16/2021   17:31:18  ( -68.59,  95.39)    2.95                33
 07/19/2021   08:07:31   ( -69.25,-124.43) 07/19/2021   08:08:41  ( -69.13,-123.33)   45.49                70
 07/19/2021   08:58:06   (  68.64,  43.70) 07/19/2021   08:58:15  (  68.62,  43.67)    2.68                 9
 07/19/2021   09:48:47   ( -68.50,-148.80) 07/19/2021   09:47:45  ( -68.52,-148.82)    2.10                62
 07/22/2021   00:24:17   ( -68.70,  -7.92) 07/22/2021   00:25:13  ( -68.72,  -7.97)    2.81                56
 07/22/2021   01:15:01   (  68.58, 159.55) 07/22/2021   01:14:40  (  68.60, 159.53)    2.09                21
 07/22/2021   02:05:31   ( -67.85, -32.20) 07/22/2021   02:04:21  ( -67.88, -33.69)   62.56                70