Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 1.  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   ( -71.48, 122.75) 04/01/2023   15:26:09  ( -71.35, 125.43)   96.23                66
 04/01/2023   16:15:30   (  70.49, -68.27) 04/01/2023   16:15:46  (  70.47, -68.25)    1.85                16
 04/01/2023   17:06:11   ( -70.35,  99.27) 04/01/2023   17:05:12  ( -70.36,  99.24)    1.91                59
 04/04/2023   04:18:45   ( -70.98, -69.85) 04/04/2023   04:19:55  ( -70.91, -68.70)   42.65                70
 04/04/2023   05:09:21   (  70.45,  98.32) 04/04/2023   05:09:24  (  70.46,  98.30)    0.99                 3
 04/04/2023   06:00:03   ( -70.36, -94.22) 04/04/2023   05:58:50  ( -70.35, -94.21)    1.73                73
 04/06/2023   17:12:29   ( -70.59,  97.32) 04/06/2023   17:13:38  ( -70.57,  97.37)    2.88                69
 04/06/2023   18:03:12   (  70.43, -95.12) 04/06/2023   18:03:01  (  70.45, -95.14)    2.57                11
 04/06/2023   18:53:45   ( -69.87,  73.07) 04/06/2023   18:52:35  ( -69.90,  71.73)   51.44                70
 04/09/2023   06:06:20   ( -70.58, -96.13) 04/09/2023   06:07:14  ( -70.57, -96.06)    2.91                54
 04/09/2023   06:57:02   (  70.42,  71.43) 04/09/2023   06:56:36  (  70.45,  71.44)    3.26                26
 04/11/2023   19:00:09   ( -70.53,  70.49) 04/11/2023   19:00:49  ( -70.52,  70.45)    2.01                40
 04/11/2023   19:50:53   (  70.43,-122.04) 04/11/2023   19:50:12  (  70.40,-122.06)    3.00                41
 04/14/2023   07:54:00   ( -70.54,-123.00) 04/14/2023   07:54:23  ( -70.52,-122.96)    2.73                23
 04/14/2023   08:44:43   (  70.39,  44.55) 04/14/2023   08:43:46  (  70.41,  44.54)    1.97                57