Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2021 9 13.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2021   03:56:47   ( -77.89, -83.44) 09/21/2021   03:55:34  ( -77.90, -83.33)    2.86                73
 09/21/2021   04:47:32   (  77.88,  83.95) 09/21/2021   04:46:38  (  77.89,  83.86)    2.97                54
 09/21/2021   05:38:17   ( -77.90,-108.84) 09/21/2021   05:37:34  ( -77.91,-108.78)    2.21                43
 09/21/2021   06:29:03   (  77.92,  58.34) 09/21/2021   06:28:38  (  77.90,  58.41)    2.58                25
 09/21/2021   07:19:47   ( -77.90,-134.24) 09/21/2021   07:19:34  ( -77.92,-134.23)    2.11                13
 09/21/2021   08:10:33   (  77.93,  32.94) 09/21/2021   08:10:38  (  77.91,  32.97)    1.63                 5
 09/21/2021   09:01:17   ( -77.91,-159.64) 09/21/2021   09:01:34  ( -77.93,-159.67)    2.64                17
 09/21/2021   09:52:03   (  77.93,   7.54) 09/21/2021   09:52:38  (  77.92,   7.52)    1.18                35
 09/21/2021   10:42:47   ( -77.95, 174.75) 09/21/2021   10:43:33  ( -77.94, 174.88)    3.32                46
 09/21/2021   11:33:32   (  77.94, -17.86) 09/21/2021   11:34:37  (  77.93, -17.92)    1.68                65
 09/21/2021   12:24:19   ( -78.04, 148.94) 09/21/2021   12:25:32  ( -77.99, 149.65)   17.51                73