Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 27.  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)
 05/08/2023   12:09:04   ( -75.33, 163.13) 05/08/2023   12:07:53  ( -75.32, 163.24)    3.27                71
 05/08/2023   12:59:49   (  75.29, -29.46) 05/08/2023   12:58:47  (  75.30, -29.57)    3.22                62
 05/08/2023   13:50:34   ( -75.33, 137.75) 05/08/2023   13:49:52  ( -75.33, 137.77)    0.74                42
 05/08/2023   14:41:20   (  75.34, -54.98) 05/08/2023   14:40:45  (  75.35, -54.89)    2.54                35
 05/08/2023   15:32:04   ( -75.33, 112.36) 05/08/2023   15:31:51  ( -75.34, 112.30)    1.78                13
 05/08/2023   16:22:50   (  75.35, -80.37) 05/08/2023   16:22:44  (  75.36, -80.36)    0.90                 6
 05/08/2023   17:13:35   ( -75.38,  86.84) 05/08/2023   17:13:49  ( -75.39,  86.98)    4.01                14
 05/08/2023   18:04:20   (  75.35,-105.75) 05/08/2023   18:04:43  (  75.36,-105.83)    2.76                23
 05/08/2023   18:55:05   ( -75.39,  61.45) 05/08/2023   18:55:48  ( -75.40,  61.51)    1.85                43
 05/08/2023   19:45:51   (  75.40,-131.28) 05/08/2023   19:46:42  (  75.37,-131.31)    3.52                51
 05/08/2023   20:36:35   ( -75.39,  36.07) 05/08/2023   20:37:47  ( -75.40,  36.03)    1.83                72
 05/08/2023   21:27:25   (  75.59,-157.24) 05/08/2023   21:28:37  (  75.56,-156.17)   29.87                72