Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 7 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)
 07/19/2023   05:21:35   (  71.55,  93.32) 07/19/2023   05:22:42  (  71.45,  95.31)   70.96                67
 07/19/2023   06:12:04   ( -70.77, -98.03) 07/19/2023   06:12:18  ( -70.78, -98.08)    1.95                14
 07/19/2023   07:02:48   (  70.67,  69.45) 07/19/2023   07:01:40  (  70.69,  69.45)    2.81                68
 07/21/2023   18:15:15   (  70.87, -98.98) 07/21/2023   18:16:07  (  70.89, -98.91)    3.54                52
 07/21/2023   19:05:57   ( -70.77,  68.50) 07/21/2023   19:05:33  ( -70.77,  68.56)    2.23                24
 07/24/2023   06:18:40   ( -71.79,-101.38) 07/24/2023   06:19:46  ( -71.70, -98.62)   96.72                66
 07/24/2023   07:09:07   (  70.82,  67.63) 07/24/2023   07:09:23  (  70.79,  67.61)    2.59                16
 07/24/2023   07:59:49   ( -70.71,-124.88) 07/24/2023   07:58:48  ( -70.73,-124.83)    2.55                61
 07/26/2023   19:12:15   ( -70.87,  66.77) 07/26/2023   19:13:15  ( -70.87,  66.73)    1.35                60
 07/26/2023   20:02:59   (  70.77,-125.77) 07/26/2023   20:02:37  (  70.78,-125.74)    1.41                22
 07/26/2023   20:53:24   ( -69.77,  43.11) 07/26/2023   20:52:18  ( -69.84,  40.56)   98.04                66
 07/29/2023   08:06:07   ( -70.83,-126.64) 07/29/2023   08:06:29  ( -70.83,-126.66)    0.79                22
 07/29/2023   08:56:51   (  70.73,  40.82) 07/29/2023   08:55:51  (  70.74,  40.87)    1.92                60
 07/31/2023   20:09:17   (  70.90,-127.56) 07/31/2023   20:10:17  (  70.89,-127.56)    2.05                60
 07/31/2023   20:59:59   ( -70.80,  39.94) 07/31/2023   20:59:42  ( -70.82,  39.99)    2.97                17