Simultaneous Nadir Overpasses (SNOs) between METOP-B and TERRA
TLE Epoch: 2021 4 10.  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)
 04/10/2021   06:01:47   (  81.31, 135.85) 04/10/2021   06:02:12  (  81.31, 136.02)    2.95                25
 04/10/2021   06:52:26   ( -81.32, -56.29) 04/10/2021   06:51:39  ( -81.31, -56.46)    2.95                47
 04/13/2021   01:36:07   (  81.31,-157.87) 04/13/2021   01:36:25  (  81.31,-157.69)    2.97                18
 04/13/2021   02:26:45   ( -81.32,  10.38) 04/13/2021   02:25:51  ( -81.32,  10.23)    2.57                54
 04/15/2021   21:10:27   (  81.31, -91.22) 04/15/2021   21:10:38  (  81.32, -91.07)    2.60                11
 04/15/2021   22:01:06   ( -81.32,  76.65) 04/15/2021   22:00:05  ( -81.31,  76.50)    2.61                61
 04/18/2021   16:44:48   (  81.31, -24.98) 04/18/2021   16:44:52  (  81.30, -24.86)    2.07                 4
 04/18/2021   17:35:26   ( -81.32, 143.30) 04/18/2021   17:34:18  ( -81.32, 143.12)    3.05                68
 04/21/2021   11:28:27   ( -81.30,-126.12) 04/21/2021   11:29:38  ( -81.31,-125.98)    2.38                71
 04/21/2021   12:19:07   (  81.31,  41.63) 04/21/2021   12:19:04  (  81.31,  41.69)    1.00                 3