Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 18.  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)
 04/23/2023   18:36:02   ( -75.38,  66.26) 04/23/2023   18:34:51  ( -75.37,  66.20)    2.38                71
 04/23/2023   19:26:48   (  75.40,-126.48) 04/23/2023   19:25:44  (  75.40,-126.41)    2.02                64
 04/23/2023   20:17:32   ( -75.40,  40.85) 04/23/2023   20:16:49  ( -75.42,  40.89)    3.25                43
 04/23/2023   21:08:18   (  75.41,-151.89) 04/23/2023   21:07:43  (  75.41,-151.87)    0.42                35
 04/23/2023   21:59:01   ( -75.41,  15.44) 04/23/2023   21:58:47  ( -75.43,  15.42)    2.90                14
 04/23/2023   22:49:47   (  75.42,-177.30) 04/23/2023   22:49:41  (  75.42,-177.34)    1.18                 6
 04/23/2023   23:40:32   ( -75.47, -10.11) 04/23/2023   23:40:46  ( -75.44, -10.04)    3.27                14
 04/24/2023   00:31:17   (  75.44, 157.29) 04/24/2023   00:31:40  (  75.43, 157.20)    2.77                23
 04/24/2023   01:22:02   ( -75.48, -35.52) 04/24/2023   01:22:45  ( -75.45, -35.51)    2.98                43
 04/24/2023   02:12:48   (  75.49, 131.74) 04/24/2023   02:13:38  (  75.48, 131.88)    4.13                50
 04/24/2023   03:03:32   ( -75.49, -60.93) 04/24/2023   03:04:44  ( -75.46, -60.97)    3.45                72
 04/24/2023   03:54:22   (  75.69, 105.74) 04/24/2023   03:55:33  (  75.68, 107.03)   35.60                71