Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 19.  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   18:36:01   ( -75.37,  66.31) 04/23/2023   18:34:50  ( -75.39,  66.25)    2.54                71
 04/23/2023   19:26:47   (  75.38,-126.43) 04/23/2023   19:25:44  (  75.38,-126.50)    2.20                63
 04/23/2023   20:17:31   ( -75.38,  40.90) 04/23/2023   20:16:49  ( -75.39,  40.79)    3.56                42
 04/23/2023   21:08:17   (  75.39,-151.84) 04/23/2023   21:07:43  (  75.38,-151.97)    3.79                34
 04/23/2023   21:59:02   ( -75.44,  15.35) 04/23/2023   21:58:47  ( -75.45,  15.47)    3.75                15
 04/23/2023   22:49:48   (  75.45,-177.39) 04/23/2023   22:49:41  (  75.44,-177.28)    3.44                 7
 04/23/2023   23:40:32   ( -75.45, -10.06) 04/23/2023   23:40:46  ( -75.46,  -9.99)    2.22                14
 04/24/2023   00:31:18   (  75.47, 157.20) 04/24/2023   00:31:40  (  75.45, 157.25)    2.44                22
 04/24/2023   01:22:02   ( -75.46, -35.47) 04/24/2023   01:22:45  ( -75.47, -35.45)    0.82                43
 04/24/2023   02:12:48   (  75.48, 131.79) 04/24/2023   02:13:39  (  75.46, 131.79)    2.26                51
 04/24/2023   03:03:32   ( -75.47, -60.88) 04/24/2023   03:04:44  ( -75.48, -60.92)    1.10                72
 04/24/2023   03:54:23   (  75.72, 105.64) 04/24/2023   03:55:34  (  75.65, 106.93)   36.56                71