Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 9 12.  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, 113.84) 09/14/2021   02:47:30  (  77.94, 113.73)    2.98                75
 09/14/2021   03:37:13   ( -77.91, -78.96) 09/14/2021   03:38:14  ( -77.92, -78.85)    2.74                61
 09/14/2021   04:28:15   (  77.93,  88.40) 09/14/2021   04:29:00  (  77.94,  88.34)    1.53                45
 09/14/2021   05:19:13   ( -77.92,-104.41) 09/14/2021   05:19:44  ( -77.92,-104.24)    3.99                31
 09/14/2021   06:10:15   (  77.94,  62.95) 09/14/2021   06:10:30  (  77.94,  62.95)    0.19                15
 09/14/2021   07:01:13   ( -77.93,-129.86) 09/14/2021   07:01:15  ( -77.96,-129.83)    3.81                 2
 09/14/2021   07:52:15   (  77.95,  37.51) 09/14/2021   07:52:00  (  77.95,  37.57)    1.39                15
 09/14/2021   08:43:12   ( -77.98,-155.08) 09/14/2021   08:42:45  ( -77.97,-155.22)    3.42                27
 09/14/2021   09:34:15   (  77.96,  12.07) 09/14/2021   09:33:30  (  77.95,  12.18)    2.83                45
 09/14/2021   10:25:12   ( -77.99, 179.47) 09/14/2021   10:24:15  ( -77.97, 179.39)    2.64                57
 09/14/2021   11:16:15   (  77.97, -13.38) 09/14/2021   11:15:01  (  77.99, -13.42)    2.71                74