Temporal evolution of the Venusian magnetosheath magnetic field clock angle under an IMF variation from [0.0, 6.5, 0] nT to [−3.6, 0.0, 5.4] nT. (a) IMF (red dashed lines) probed on the dayside [X, Y, Z]_vso = [1.25, 0, 5] R_v (circle symbol), terminator region [X, Y, Z]_VSO = [0, 0, 5] R_v (triangle), and nightside [X, Y, Z]_VSO = [−3, 0, 5] R_v (square). The magnetic field in the inner and outer parts of magnetosheath (blue and green and lines) are probed at [X, Y, Z]_VSO = [1.25, 0, 0] R_v, [0, 0, 1.5] R_v, [−3, 0, 2] R_v, and [X, Y, Z]_VSO = [1.25, 0, 0.5] R_v, [0, 0, 2] R_v, [−3, 0, 3] R_v. The six positions are labeled by blue and green points in (b). The white lines mark the flow directions, and an interval between two yellow points corresponds to a time period of about 16 s.