Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 1 12.  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)
 01/13/2023   00:24:57   (  71.24, 168.41) 01/13/2023   00:26:03  (  71.14, 170.91)   90.32                66
 01/13/2023   01:15:23   ( -70.32, -22.75) 01/13/2023   01:15:42  ( -70.29, -22.71)    3.08                19
 01/13/2023   02:06:07   (  70.20, 144.74) 01/13/2023   02:05:06  (  70.18, 144.79)    2.71                61
 01/15/2023   14:09:16   ( -70.29, 143.81) 01/15/2023   14:09:44  ( -70.30, 143.76)    2.32                28
 01/15/2023   15:00:00   (  70.17, -48.71) 01/15/2023   14:59:08  (  70.19, -48.74)    2.08                52
 01/18/2023   03:03:11   ( -70.32, -49.72) 01/18/2023   03:03:46  ( -70.33, -49.72)    1.79                35
 01/18/2023   03:53:55   (  70.21, 117.76) 01/18/2023   03:53:10  (  70.21, 117.77)    0.99                45
 01/20/2023   15:57:06   ( -70.36, 116.73) 01/20/2023   15:57:48  ( -70.34, 116.75)    2.58                42
 01/20/2023   16:47:49   (  70.20, -75.71) 01/20/2023   16:47:12  (  70.21, -75.76)    2.63                37
 01/23/2023   04:51:00   ( -70.35, -76.75) 01/23/2023   04:51:49  ( -70.36, -76.73)    1.05                49
 01/23/2023   05:41:44   (  70.25,  90.73) 01/23/2023   05:41:13  (  70.23,  90.74)    1.83                31
 01/25/2023   17:44:54   ( -70.36,  89.76) 01/25/2023   17:45:50  ( -70.36,  89.74)    0.91                56
 01/25/2023   18:35:38   (  70.26,-102.77) 01/25/2023   18:35:13  (  70.28,-102.72)    3.13                25