Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 6 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)
 07/06/2023   12:53:05   (  74.40, -25.44) 07/06/2023   12:52:00  (  74.42, -28.65)   95.96                65
 07/06/2023   13:43:59   ( -74.86, 140.62) 07/06/2023   13:42:46  ( -74.85, 139.87)   21.79                73
 07/06/2023   14:34:47   (  74.98, -52.41) 07/06/2023   14:33:47  (  74.98, -52.50)    2.48                60
 07/06/2023   15:25:32   ( -75.01, 114.82) 07/06/2023   15:24:42  ( -74.99, 114.80)    2.48                50
 07/06/2023   16:16:18   (  75.04, -77.94) 07/06/2023   16:15:45  (  75.03, -77.85)    2.89                33
 07/06/2023   17:07:02   ( -75.02,  89.42) 07/06/2023   17:06:40  ( -75.04,  89.45)    2.14                22
 07/06/2023   17:57:48   (  75.05,-103.34) 07/06/2023   17:57:44  (  75.03,-103.34)    1.65                 4
 07/06/2023   18:48:32   ( -75.03,  64.03) 07/06/2023   18:48:39  ( -75.04,  63.96)    2.51                 7
 07/06/2023   19:39:18   (  75.05,-128.73) 07/06/2023   19:39:42  (  75.08,-128.69)    3.05                24
 07/06/2023   20:30:03   ( -75.08,  38.50) 07/06/2023   20:30:37  ( -75.09,  38.61)    3.12                34
 07/06/2023   21:20:48   (  75.06,-154.13) 07/06/2023   21:21:41  (  75.08,-154.18)    2.53                53
 07/06/2023   22:11:33   ( -75.09,  13.10) 07/06/2023   22:12:36  ( -75.09,  13.11)    0.42                63
 07/06/2023   23:02:24   (  75.35, 179.63) 07/06/2023   23:03:35  (  75.31,-178.95)   40.28                71