Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 5 27.  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)
 06/07/2023   00:05:51   (  74.82, 165.31) 06/07/2023   00:04:41  (  74.83, 163.44)   54.41                70
 06/07/2023   00:56:42   ( -75.15, -28.30) 06/07/2023   00:55:34  ( -75.14, -28.37)    2.20                68
 06/07/2023   01:47:28   (  75.16, 138.96) 06/07/2023   01:46:33  (  75.16, 138.95)    0.73                55
 06/07/2023   02:38:13   ( -75.20, -53.83) 06/07/2023   02:37:32  ( -75.19, -53.71)    3.65                41
 06/07/2023   03:28:58   (  75.17, 113.57) 06/07/2023   03:28:32  (  75.16, 113.47)    3.05                26
 06/07/2023   04:19:43   ( -75.20, -79.22) 06/07/2023   04:19:31  ( -75.19, -79.19)    1.56                12
 06/07/2023   05:10:29   (  75.22,  88.04) 06/07/2023   05:10:30  (  75.21,  88.13)    2.69                 1
 06/07/2023   06:01:13   ( -75.21,-104.61) 06/07/2023   06:01:30  ( -75.19,-104.67)    2.40                17
 06/07/2023   06:51:59   (  75.22,  62.65) 06/07/2023   06:52:29  (  75.22,  62.65)    0.94                30
 06/07/2023   07:42:43   ( -75.21,-130.00) 06/07/2023   07:43:28  ( -75.24,-130.01)    3.53                45
 06/07/2023   08:33:29   (  75.23,  37.26) 06/07/2023   08:34:28  (  75.22,  37.17)    2.78                59
 06/07/2023   09:24:14   ( -75.26,-155.52) 06/07/2023   09:25:27  ( -75.25,-155.49)    2.10                73
 06/07/2023   10:15:10   (  75.75,  10.27) 06/07/2023   10:16:16  (  75.73,  13.35)   84.35                66