Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 9 10.  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)
 09/14/2021   02:46:16   (  77.90, 113.73) 09/14/2021   02:47:30  (  77.92, 113.83)    2.97                74
 09/14/2021   03:37:13   ( -77.93, -78.85) 09/14/2021   03:38:15  ( -77.94, -78.95)    2.33                62
 09/14/2021   04:28:15   (  77.95,  88.50) 09/14/2021   04:29:00  (  77.92,  88.44)    3.55                45
 09/14/2021   05:19:13   ( -77.94,-104.29) 09/14/2021   05:19:45  ( -77.94,-104.34)    0.94                32
 09/14/2021   06:10:15   (  77.96,  63.06) 09/14/2021   06:10:30  (  77.92,  63.06)    4.02                15
 09/14/2021   07:01:13   ( -77.95,-129.74) 09/14/2021   07:01:15  ( -77.94,-129.72)    0.90                 2
 09/14/2021   07:52:15   (  77.97,  37.62) 09/14/2021   07:52:01  (  77.97,  37.46)    3.68                14
 09/14/2021   08:43:13   ( -77.96,-155.19) 09/14/2021   08:42:45  ( -77.95,-155.11)    2.28                28
 09/14/2021   09:34:15   (  77.98,  12.17) 09/14/2021   09:33:31  (  77.97,  12.07)    2.62                44
 09/14/2021   10:25:13   ( -77.97, 179.37) 09/14/2021   10:24:16  ( -77.99, 179.29)    2.92                57
 09/14/2021   11:16:14   (  77.99, -13.27) 09/14/2021   11:15:00  (  77.97, -13.32)    2.08                74