Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 3 31.  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)
 04/01/2023   15:25:03   ( -71.47, 122.77) 04/01/2023   15:26:09  ( -71.36, 125.45)   95.77                66
 04/01/2023   16:15:30   (  70.48, -68.25) 04/01/2023   16:15:46  (  70.48, -68.24)    0.54                16
 04/01/2023   17:06:12   ( -70.39,  99.21) 04/01/2023   17:05:12  ( -70.37,  99.25)    2.97                60
 04/04/2023   04:18:45   ( -70.97, -69.83) 04/04/2023   04:19:56  ( -70.85, -68.78)   40.59                71
 04/04/2023   05:09:21   (  70.44,  98.33) 04/04/2023   05:09:24  (  70.46,  98.30)    1.88                 3
 04/04/2023   06:00:03   ( -70.35, -94.21) 04/04/2023   05:58:50  ( -70.35, -94.21)    0.89                73
 04/06/2023   17:12:28   ( -70.58,  97.34) 04/06/2023   17:13:37  ( -70.56,  97.35)    2.96                69
 04/06/2023   18:03:11   (  70.42, -95.10) 04/06/2023   18:03:00  (  70.44, -95.16)    2.50                11
 04/06/2023   18:53:44   ( -69.86,  73.08) 04/06/2023   18:52:34  ( -69.89,  71.71)   52.57                70
 04/09/2023   06:06:18   ( -70.52, -96.03) 04/09/2023   06:07:13  ( -70.54, -96.10)    3.11                55
 04/09/2023   06:57:02   (  70.42,  71.44) 04/09/2023   06:56:36  (  70.42,  71.40)    1.70                26
 04/11/2023   19:00:09   ( -70.52,  70.50) 04/11/2023   19:00:48  ( -70.52,  70.46)    1.25                39
 04/11/2023   19:50:53   (  70.42,-122.04) 04/11/2023   19:50:11  (  70.41,-122.05)    1.95                42