Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 5 13.  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)
 05/14/2023   15:17:52   ( -70.66, 125.79) 05/14/2023   15:19:01  ( -70.68, 125.78)    2.37                69
 05/14/2023   16:08:36   (  70.53, -66.70) 05/14/2023   16:08:25  (  70.54, -66.76)    2.37                11
 05/14/2023   16:59:08   ( -69.93, 101.56) 05/14/2023   16:57:58  ( -70.00, 100.11)   55.62                70
 05/17/2023   04:11:48   ( -70.64, -67.67) 05/17/2023   04:12:29  ( -70.61, -67.70)    3.25                41
 05/17/2023   05:02:32   (  70.52,  99.83) 05/17/2023   05:01:52  (  70.52,  99.82)    0.42                40
 05/19/2023   16:15:13   (  71.30, -69.58) 05/19/2023   16:16:21  (  71.21, -67.83)   63.27                68
 05/19/2023   17:05:44   ( -70.63,  98.85) 05/19/2023   17:05:55  ( -70.63,  98.93)    2.97                11
 05/19/2023   17:56:27   (  70.46, -93.57) 05/19/2023   17:55:19  (  70.47, -93.63)    2.68                68
 05/22/2023   05:08:57   (  70.67,  97.98) 05/22/2023   05:09:56  (  70.69,  97.99)    1.88                59
 05/22/2023   05:59:39   ( -70.58, -94.55) 05/22/2023   05:59:21  ( -70.60, -94.49)    3.12                18
 05/22/2023   06:50:06   (  69.57,  74.30) 05/22/2023   06:49:00  (  69.61,  71.79)   97.76                66
 05/24/2023   18:02:52   (  70.64, -95.44) 05/24/2023   18:03:22  (  70.63, -95.48)    1.75                30
 05/24/2023   18:53:34   ( -70.54,  72.03) 05/24/2023   18:52:47  ( -70.54,  72.05)    0.78                47