Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 6 25.  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)
 07/06/2023   12:53:06   (  74.43, -25.52) 07/06/2023   12:52:00  (  74.42, -28.63)   92.94                66
 07/06/2023   13:43:59   ( -74.84, 140.67) 07/06/2023   13:42:46  ( -74.86, 139.89)   22.81                73
 07/06/2023   14:34:48   (  75.01, -52.50) 07/06/2023   14:33:47  (  74.99, -52.48)    3.02                61
 07/06/2023   15:25:32   ( -74.99, 114.87) 07/06/2023   15:24:42  ( -75.00, 114.82)    1.67                50
 07/06/2023   16:16:18   (  75.02, -77.90) 07/06/2023   16:15:45  (  75.03, -77.83)    2.29                33
 07/06/2023   17:07:03   ( -75.05,  89.34) 07/06/2023   17:06:40  ( -75.04,  89.47)    3.59                23
 07/06/2023   17:57:48   (  75.03,-103.29) 07/06/2023   17:57:44  (  75.04,-103.33)    1.26                 4
 07/06/2023   18:48:33   ( -75.06,  63.95) 07/06/2023   18:48:39  ( -75.04,  63.97)    1.40                 6
 07/06/2023   19:39:18   (  75.04,-128.69) 07/06/2023   19:39:43  (  75.04,-128.82)    3.85                25
 07/06/2023   20:30:03   ( -75.06,  38.55) 07/06/2023   20:30:38  ( -75.05,  38.48)    2.79                35
 07/06/2023   21:20:49   (  75.09,-154.22) 07/06/2023   21:21:41  (  75.08,-154.17)    1.69                52
 07/06/2023   22:11:33   ( -75.07,  13.16) 07/06/2023   22:12:36  ( -75.09,  13.13)    2.62                63
 07/06/2023   23:02:24   (  75.34, 179.68) 07/06/2023   23:03:35  (  75.31,-178.93)   39.02                71