Simultaneous Nadir Overpasses (SNOs) between METOP-B and TERRA
TLE Epoch: 2021 4 19.  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   11:28:28   ( -81.30,-126.24) 04/21/2021   11:29:39  ( -81.30,-126.13)    1.87                71
 04/21/2021   12:19:08   (  81.31,  41.59) 04/21/2021   12:19:05  (  81.31,  41.63)    0.81                 3
 04/24/2021   07:02:47   ( -81.31, -59.63) 04/24/2021   07:03:51  ( -81.31, -59.61)    0.32                64
 04/24/2021   07:53:27   (  81.31, 108.18) 04/24/2021   07:53:17  (  81.31, 108.12)    1.12                10
 04/27/2021   02:37:07   ( -81.31,   6.97) 04/27/2021   02:38:04  ( -81.31,   6.87)    1.74                57
 04/27/2021   03:27:47   (  81.32, 174.75) 04/27/2021   03:27:30  (  81.31, 174.57)    3.11                17
 04/29/2021   22:11:28   ( -81.31,  73.16) 04/29/2021   22:12:17  ( -81.31,  73.31)    2.41                49
 04/29/2021   23:02:08   (  81.31,-119.09) 04/29/2021   23:01:43  (  81.31,-119.02)    1.23                25
 05/02/2021   17:45:47   ( -81.31, 139.73) 05/02/2021   17:46:29  ( -81.31, 139.70)    0.60                42