Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 5 9.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2023   14:20:45   (  70.60, -39.83) 05/09/2023   14:21:29  (  70.62, -39.86)    3.05                44
 05/09/2023   15:11:27   ( -70.52, 127.62) 05/09/2023   15:10:54  ( -70.51, 127.63)    0.49                33
 05/12/2023   02:24:14   ( -71.57, -42.28) 05/12/2023   02:25:20  ( -71.47, -39.60)   94.97                66
 05/12/2023   03:14:41   (  70.57, 126.73) 05/12/2023   03:14:58  (  70.57, 126.67)    2.56                17
 05/12/2023   04:05:23   ( -70.48, -65.81) 05/12/2023   04:04:23  ( -70.46, -65.83)    1.99                60
 05/14/2023   15:17:53   ( -70.66, 125.79) 05/14/2023   15:19:02  ( -70.68, 125.78)    2.19                69
 05/14/2023   16:08:36   (  70.54, -66.72) 05/14/2023   16:08:25  (  70.54, -66.77)    2.16                11
 05/14/2023   16:59:08   ( -69.93, 101.55) 05/14/2023   16:57:58  ( -70.00, 100.11)   55.39                70
 05/17/2023   04:11:48   ( -70.64, -67.67) 05/17/2023   04:12:29  ( -70.62, -67.70)    2.71                41
 05/17/2023   05:02:32   (  70.53,  99.82) 05/17/2023   05:01:52  (  70.52,  99.82)    0.37                40
 05/19/2023   16:15:13   (  71.30, -69.59) 05/19/2023   16:16:21  (  71.22, -67.82)   63.81                68
 05/19/2023   17:05:43   ( -70.58,  98.94) 05/19/2023   17:05:56  ( -70.58,  98.86)    2.80                13
 05/19/2023   17:56:27   (  70.47, -93.58) 05/19/2023   17:55:19  (  70.48, -93.63)    2.21                68
 05/22/2023   05:08:57   (  70.68,  97.98) 05/22/2023   05:09:56  (  70.70,  98.01)    2.96                59
 05/22/2023   05:59:39   ( -70.58, -94.55) 05/22/2023   05:59:22  ( -70.56, -94.55)    2.14                17