Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 13.  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,  66.28) 04/23/2023   18:34:51  ( -75.39,  66.27)    1.41                71
 04/23/2023   19:26:48   (  75.40,-126.48) 04/23/2023   19:25:45  (  75.38,-126.49)    2.57                63
 04/23/2023   20:17:32   ( -75.39,  40.87) 04/23/2023   20:16:50  ( -75.40,  40.81)    2.02                42
 04/23/2023   21:08:18   (  75.41,-151.88) 04/23/2023   21:07:43  (  75.43,-151.81)    3.15                35
 04/23/2023   21:59:02   ( -75.40,  15.46) 04/23/2023   21:58:49  ( -75.41,  15.35)    3.30                13
 04/23/2023   22:49:48   (  75.42,-177.29) 04/23/2023   22:49:42  (  75.44,-177.27)    2.16                 6
 04/23/2023   23:40:33   ( -75.46, -10.09) 04/23/2023   23:40:47  ( -75.47,  -9.96)    3.61                14
 04/24/2023   00:31:18   (  75.43, 157.30) 04/24/2023   00:31:41  (  75.45, 157.26)    2.05                23
 04/24/2023   01:22:03   ( -75.47, -35.50) 04/24/2023   01:22:46  ( -75.47, -35.43)    2.10                43
 04/24/2023   02:12:48   (  75.45, 131.89) 04/24/2023   02:13:40  (  75.46, 131.80)    2.92                52
 04/24/2023   03:03:33   ( -75.48, -60.91) 04/24/2023   03:04:45  ( -75.48, -60.89)    0.60                72
 04/24/2023   03:54:24   (  75.74, 105.59) 04/24/2023   03:55:34  (  75.70, 107.10)   41.69                70