Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 8 18.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/30/2021   21:54:29   ( -77.99,   6.59) 08/30/2021   21:55:36  ( -77.98,   6.50)    2.27                67
 08/30/2021   22:45:28   (  77.98, 173.79) 08/30/2021   22:46:21  (  77.96, 173.88)    2.41                53
 08/30/2021   23:36:29   ( -78.00, -18.86) 08/30/2021   23:37:06  ( -77.98, -18.89)    1.90                37
 08/31/2021   00:27:28   (  77.99, 148.35) 08/31/2021   00:27:52  (  78.01, 148.28)    2.83                24
 08/31/2021   01:18:29   ( -78.01, -44.30) 08/31/2021   01:18:36  ( -77.98, -44.28)    2.57                 7
 08/31/2021   02:09:28   (  78.00, 122.91) 08/31/2021   02:09:22  (  78.01, 122.89)    1.52                 6
 08/31/2021   03:00:29   ( -78.01, -69.74) 08/31/2021   03:00:07  ( -78.03, -69.87)    3.24                22
 08/31/2021   03:51:28   (  78.01,  97.47) 08/31/2021   03:50:52  (  78.01,  97.50)    0.91                36
 08/31/2021   04:42:29   ( -78.02, -95.19) 08/31/2021   04:41:37  ( -78.03, -95.26)    1.78                52
 08/31/2021   05:33:28   (  78.02,  72.03) 08/31/2021   05:32:22  (  78.02,  72.11)    1.88                66
 08/31/2021   06:24:21   ( -78.33,-118.82) 08/31/2021   06:23:15  ( -78.35,-122.38)   79.85                66