Simultaneous Nadir Overpasses (SNOs) between METOP-B and TERRA
TLE Epoch: 2021 4 21.  Predictions up to the next  14.0 days:

     Date     Time(METOP-B) METOP-B Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2021   11:28:27   ( -81.31,-126.09) 04/21/2021   11:29:38  ( -81.31,-126.00)    1.63                71
 04/21/2021   12:19:07   (  81.31,  41.75) 04/21/2021   12:19:04  (  81.32,  41.78)    0.46                 3
 04/24/2021   07:02:47   ( -81.31, -59.48) 04/24/2021   07:03:51  ( -81.31, -59.49)    0.36                64
 04/24/2021   07:53:27   (  81.32, 108.35) 04/24/2021   07:53:17  (  81.32, 108.26)    1.42                10
 04/27/2021   02:37:07   ( -81.31,   7.12) 04/27/2021   02:38:04  ( -81.31,   6.98)    2.43                57
 04/27/2021   03:27:48   (  81.31, 174.52) 04/27/2021   03:27:30  (  81.32, 174.69)    2.92                18
 04/29/2021   22:11:27   ( -81.31,  73.31) 04/29/2021   22:12:16  ( -81.31,  73.39)    1.37                49
 04/29/2021   23:02:07   (  81.32,-118.93) 04/29/2021   23:01:42  (  81.32,-118.92)    0.11                25
 05/02/2021   17:45:47   ( -81.31, 139.88) 05/02/2021   17:46:29  ( -81.31, 139.75)    2.07                42