Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 5 15.  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)
 05/17/2023   04:11:48   ( -70.65, -67.68) 05/17/2023   04:12:28  ( -70.67, -67.63)    2.83                40
 05/17/2023   05:02:32   (  70.53,  99.82) 05/17/2023   05:01:52  (  70.52,  99.82)    0.13                40
 05/19/2023   16:15:13   (  71.30, -69.58) 05/19/2023   16:16:22  (  71.17, -67.89)   61.87                69
 05/19/2023   17:05:43   ( -70.58,  98.93) 05/19/2023   17:05:56  ( -70.58,  98.86)    2.63                13
 05/19/2023   17:56:27   (  70.46, -93.57) 05/19/2023   17:55:19  (  70.49, -93.61)    3.26                68
 05/22/2023   05:08:57   (  70.67,  97.99) 05/22/2023   05:09:57  (  70.67,  97.96)    1.31                60
 05/22/2023   05:59:39   ( -70.58, -94.55) 05/22/2023   05:59:22  ( -70.58, -94.52)    0.81                17
 05/22/2023   06:50:06   (  69.56,  74.31) 05/22/2023   06:49:00  (  69.65,  71.83)   96.69                66
 05/24/2023   18:02:52   (  70.62, -95.42) 05/24/2023   18:03:23  (  70.64, -95.48)    2.70                31
 05/24/2023   18:53:34   ( -70.53,  72.05) 05/24/2023   18:52:48  ( -70.55,  72.05)    2.43                46
 05/27/2023   06:06:10   ( -71.06, -96.93) 05/27/2023   06:07:21  ( -70.96, -96.03)   34.30                71
 05/27/2023   06:56:48   (  70.63,  71.08) 05/27/2023   06:56:48  (  70.63,  71.13)    2.21                 0
 05/27/2023   07:47:28   ( -70.43,-121.29) 05/27/2023   07:46:15  ( -70.44,-121.49)    7.71                73