Simultaneous Nadir Overpasses (SNOs) between METOP-B and TERRA
TLE Epoch: 2021 4 16.  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)
 04/18/2021   16:44:47   (  81.31, -24.81) 04/18/2021   16:44:51  (  81.31, -24.70)    1.91                 4
 04/18/2021   17:35:25   ( -81.32, 143.41) 04/18/2021   17:34:17  ( -81.33, 143.22)    3.31                68
 04/21/2021   11:28:27   ( -81.31,-126.00) 04/21/2021   11:29:38  ( -81.31,-125.88)    2.19                71
 04/21/2021   12:19:07   (  81.31,  41.80) 04/21/2021   12:19:04  (  81.32,  41.85)    0.92                 3
 04/24/2021   07:02:48   ( -81.30, -59.78) 04/24/2021   07:03:52  ( -81.30, -59.73)    1.05                64
 04/24/2021   07:53:27   (  81.32, 108.39) 04/24/2021   07:53:17  (  81.32, 108.35)    0.93                10
 04/27/2021   02:37:07   ( -81.31,   6.82) 04/27/2021   02:38:04  ( -81.30,   6.76)    1.07                57
 04/27/2021   03:27:47   (  81.31, 174.57) 04/27/2021   03:27:30  (  81.30, 174.44)    2.51                17
 04/29/2021   22:11:27   ( -81.31,  73.40) 04/29/2021   22:12:17  ( -81.30,  73.21)    3.19                50