Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 5 18.  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)
 05/19/2023   16:15:13   (  71.28, -69.56) 05/19/2023   16:16:22  (  71.19, -67.87)   61.32                69
 05/19/2023   17:05:43   ( -70.57,  98.95) 05/19/2023   17:05:56  ( -70.59,  98.88)    3.30                13
 05/19/2023   17:56:28   (  70.50, -93.63) 05/19/2023   17:55:19  (  70.50, -93.59)    1.48                69
 05/22/2023   05:08:58   (  70.70,  97.93) 05/22/2023   05:09:57  (  70.70,  98.00)    2.49                59
 05/22/2023   05:59:39   ( -70.57, -94.53) 05/22/2023   05:59:23  ( -70.55, -94.57)    2.72                16
 05/22/2023   06:50:07   (  69.60,  74.26) 05/22/2023   06:49:01  (  69.62,  71.79)   95.62                66
 05/24/2023   18:02:53   (  70.65, -95.47) 05/24/2023   18:03:24  (  70.62, -95.50)    3.45                31
 05/24/2023   18:53:34   ( -70.51,  72.07) 05/24/2023   18:52:49  ( -70.53,  72.03)    3.09                45
 05/27/2023   06:06:10   ( -71.08, -96.98) 05/27/2023   06:07:21  ( -70.96, -96.03)   37.08                71
 05/27/2023   06:56:47   (  70.61,  71.12) 05/27/2023   06:56:48  (  70.64,  71.14)    3.38                 1
 05/27/2023   07:47:28   ( -70.46,-121.33) 05/27/2023   07:46:14  ( -70.50,-121.41)    4.90                74
 05/29/2023   18:59:58   ( -70.68,  70.21) 05/29/2023   19:00:51  ( -70.69,  70.18)    1.91                53
 05/29/2023   19:50:42   (  70.57,-122.30) 05/29/2023   19:50:14  (  70.57,-122.33)    1.21                28