Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 9 11.  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   02:46:15   (  77.92, 113.83) 09/14/2021   02:47:29  (  77.90, 113.93)    3.28                74
 09/14/2021   03:37:13   ( -77.91, -78.97) 09/14/2021   03:38:14  ( -77.92, -78.86)    2.82                61
 09/14/2021   04:28:15   (  77.93,  88.38) 09/14/2021   04:29:00  (  77.94,  88.33)    1.94                45
 09/14/2021   05:19:13   ( -77.92,-104.42) 09/14/2021   05:19:44  ( -77.92,-104.25)    3.97                31
 09/14/2021   06:10:15   (  77.94,  62.94) 09/14/2021   06:10:30  (  77.95,  62.94)    0.74                15
 09/14/2021   07:01:13   ( -77.93,-129.86) 09/14/2021   07:01:15  ( -77.97,-129.84)    4.17                 2
 09/14/2021   07:52:15   (  77.95,  37.50) 09/14/2021   07:52:00  (  77.95,  37.55)    1.24                15
 09/14/2021   08:43:12   ( -77.98,-155.09) 09/14/2021   08:42:45  ( -77.97,-155.23)    3.35                27
 09/14/2021   09:34:15   (  77.96,  12.05) 09/14/2021   09:33:30  (  77.95,  12.16)    2.58                45
 09/14/2021   10:25:12   ( -77.99, 179.46) 09/14/2021   10:24:15  ( -77.97, 179.38)    2.43                57
 09/14/2021   11:16:15   (  77.97, -13.39) 09/14/2021   11:15:01  (  78.00, -13.44)    3.24                74