Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 1 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)
 01/18/2023   03:53:55   (  70.19, 117.78) 01/18/2023   03:53:10  (  70.20, 117.75)    1.51                45
 01/20/2023   15:57:06   ( -70.35, 116.74) 01/20/2023   15:57:47  ( -70.34, 116.76)    2.31                41
 01/20/2023   16:47:50   (  70.24, -75.78) 01/20/2023   16:47:11  (  70.22, -75.75)    2.66                39
 01/23/2023   04:50:59   ( -70.36, -76.75) 01/23/2023   04:51:46  ( -70.38, -76.71)    2.46                47
 01/23/2023   05:41:43   (  70.25,  90.73) 01/23/2023   05:41:10  (  70.25,  90.77)    1.61                33
 01/25/2023   17:44:53   ( -70.37,  89.75) 01/25/2023   17:45:46  ( -70.38,  89.77)    1.00                53
 01/25/2023   18:35:37   (  70.26,-102.77) 01/25/2023   18:35:10  (  70.25,-102.76)    1.93                27
 01/28/2023   06:38:47   ( -70.40,-103.77) 01/28/2023   06:39:45  ( -70.39,-103.72)    1.73                58
 01/28/2023   07:29:30   (  70.24,  63.79) 01/28/2023   07:29:09  (  70.26,  63.74)    2.77                21
 01/28/2023   08:19:56   ( -69.29,-127.50) 01/28/2023   08:18:49  ( -69.37,-129.82)   91.40                67
 01/30/2023   19:32:40   ( -70.38,  62.78) 01/30/2023   19:33:44  ( -70.37,  62.73)    2.12                64
 01/30/2023   20:23:24   (  70.27,-129.75) 01/30/2023   20:23:07  (  70.28,-129.74)    0.97                17