Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 11 13.  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)
 11/17/2023   14:21:47   (  73.89, -46.55) 11/17/2023   14:20:37  (  73.87, -48.35)   55.63                70
 11/17/2023   15:12:38   ( -74.22, 119.94) 11/17/2023   15:11:25  ( -74.22, 119.85)    3.00                73
 11/17/2023   16:03:24   (  74.24, -72.78) 11/17/2023   16:02:28  (  74.24, -72.88)    2.83                56
 11/17/2023   16:54:09   ( -74.27,  94.44) 11/17/2023   16:53:23  ( -74.26,  94.44)    1.95                46
 11/17/2023   17:44:55   (  74.29, -98.29) 11/17/2023   17:44:26  (  74.27, -98.29)    1.96                29
 11/17/2023   18:35:39   ( -74.27,  69.06) 11/17/2023   18:35:21  ( -74.29,  69.03)    1.72                18
 11/17/2023   19:26:25   (  74.29,-123.67) 11/17/2023   19:26:24  (  74.30,-123.70)    1.57                 1
 11/17/2023   20:17:10   ( -74.32,  43.56) 11/17/2023   20:17:19  ( -74.32,  43.62)    1.94                 9
 11/17/2023   21:07:56   (  74.34,-149.17) 11/17/2023   21:08:22  (  74.33,-149.10)    2.17                26
 11/17/2023   21:58:40   ( -74.33,  18.18) 11/17/2023   21:59:17  ( -74.35,  18.21)    2.62                37
 11/17/2023   22:49:26   (  74.34,-174.55) 11/17/2023   22:50:20  (  74.36,-174.51)    2.56                54
 11/17/2023   23:40:11   ( -74.38,  -7.32) 11/17/2023   23:41:15  ( -74.38,  -7.20)    3.77                64
 11/18/2023   00:31:03   (  74.68, 159.17) 11/18/2023   00:32:13  (  74.63, 160.75)   46.74                70