Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 5 15.  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)
 05/23/2023   05:42:05   ( -74.99, -99.18) 05/23/2023   05:40:54  ( -74.96,-100.66)   42.92                71
 05/23/2023   06:32:56   (  75.23,  67.42) 05/23/2023   06:31:44  (  75.23,  67.43)    0.52                72
 05/23/2023   07:23:40   ( -75.23,-125.25) 05/23/2023   07:22:47  ( -75.25,-125.28)    2.35                53
 05/23/2023   08:14:26   (  75.24,  42.03) 05/23/2023   08:13:43  (  75.24,  41.95)    2.13                43
 05/23/2023   09:05:11   ( -75.28,-150.78) 05/23/2023   09:04:46  ( -75.25,-150.76)    2.96                25
 05/23/2023   09:55:57   (  75.29,  16.50) 05/23/2023   09:55:41  (  75.29,  16.62)    3.51                16
 05/23/2023   10:46:41   ( -75.28,-176.17) 05/23/2023   10:46:44  ( -75.30,-176.09)    3.25                 3
 05/23/2023   11:37:27   (  75.29,  -8.89) 05/23/2023   11:37:40  (  75.29,  -8.85)    1.02                13
 05/23/2023   12:28:11   ( -75.29, 158.45) 05/23/2023   12:28:43  ( -75.31, 158.44)    2.52                32
 05/23/2023   13:18:57   (  75.30, -34.27) 05/23/2023   13:19:39  (  75.30, -34.33)    1.51                42
 05/23/2023   14:09:42   ( -75.34, 132.92) 05/23/2023   14:10:42  ( -75.31, 132.96)    2.84                60
 05/23/2023   15:00:27   (  75.30, -59.66) 05/23/2023   15:01:38  (  75.30, -59.80)    4.01                71
 05/23/2023   15:51:24   ( -75.90, 105.76) 05/23/2023   15:52:29  ( -75.86, 109.32)   96.54                65