Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2022 12 15.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2022   13:47:52   ( -76.00, 136.76) 12/25/2022   13:46:47  ( -76.02, 136.72)    2.81                65
 12/25/2022   14:38:36   (  76.03, -56.01) 12/25/2022   14:37:40  (  76.04, -55.93)    2.68                56
 12/25/2022   15:29:13   ( -76.04, 111.30) 12/25/2022   15:28:46  ( -76.05, 111.31)    1.16                27
 12/25/2022   16:19:57   (  76.07, -81.48) 12/25/2022   16:19:39  (  76.07, -81.34)    3.71                18
 12/25/2022   17:10:34   ( -76.08,  85.83) 12/25/2022   17:10:45  ( -76.07,  85.91)    2.05                11
 12/25/2022   18:01:17   (  76.06,-106.79) 12/25/2022   18:01:39  (  76.05,-106.91)    3.50                22
 12/25/2022   18:51:54   ( -76.07,  60.52) 12/25/2022   18:52:44  ( -76.10,  60.50)    3.18                50
 12/25/2022   19:42:38   (  76.10,-132.26) 12/25/2022   19:43:38  (  76.07,-132.31)    3.35                60