Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 10.  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   ( -75.36,  66.32) 04/23/2023   18:34:51  ( -75.38,  66.24)    2.80                71
 04/23/2023   19:26:48   (  75.39,-126.44) 04/23/2023   19:25:44  (  75.41,-126.39)    2.69                64
 04/23/2023   20:17:33   ( -75.42,  40.77) 04/23/2023   20:16:50  ( -75.39,  40.78)    3.80                43
 04/23/2023   21:08:18   (  75.40,-151.85) 04/23/2023   21:07:43  (  75.42,-151.85)    2.00                35
 04/23/2023   21:59:03   ( -75.43,  15.36) 04/23/2023   21:58:48  ( -75.44,  15.46)    3.02                15
 04/23/2023   22:49:48   (  75.41,-177.26) 04/23/2023   22:49:42  (  75.43,-177.32)    2.40                 6
 04/23/2023   23:40:33   ( -75.44, -10.05) 04/23/2023   23:40:47  ( -75.45, -10.00)    1.56                14
 04/24/2023   00:31:18   (  75.42, 157.33) 04/24/2023   00:31:41  (  75.44, 157.22)    3.53                23
 04/24/2023   01:22:03   ( -75.46, -35.46) 04/24/2023   01:22:46  ( -75.46, -35.47)    0.71                43
 04/24/2023   02:12:49   (  75.48, 131.78) 04/24/2023   02:13:39  (  75.49, 131.90)    3.68                50
 04/24/2023   03:03:33   ( -75.47, -60.87) 04/24/2023   03:04:45  ( -75.47, -60.93)    1.82                72
 04/24/2023   03:54:23   (  75.68, 105.78) 04/24/2023   03:55:35  (  75.64, 106.90)   31.23                72