components/DatePicker/style/rtl.less
.@{prefix}-picker-container-rtl,
.@{prefix}-picker-range-container-rtl {
  direction: rtl;

  .@{picker-prefix-cls} {
    &-cell-range-start,
    &-cell-hover-range-start {
      .@{picker-prefix-cls}-date {
        border-radius: 0 @picker-panel-cell-boundary-border-radius
          @picker-panel-cell-boundary-border-radius 0;
      }
    }

    &-cell-range-end,
    &-cell-hover-range-end {
      .@{picker-prefix-cls}-date {
        border-radius: @picker-panel-cell-boundary-border-radius 0 0
          @picker-panel-cell-boundary-border-radius;
      }
    }
  }

  .@{week-panel-prefix-cls} {
    .@{picker-prefix-cls}-cell {
      &:nth-child(2) {
        .@{picker-prefix-cls}-date {
          padding-right: 4px;
          padding-left: 0;
          border-radius: 0 @picker-panel-cell-boundary-border-radius
            @picker-panel-cell-boundary-border-radius 0;

          .@{picker-prefix-cls}-date-value {
            border-radius: 0 @picker-panel-border-radius-cell_selected
              @picker-panel-border-radius-cell_selected 0;
          }
        }
      }

      &:nth-child(8) {
        .@{picker-prefix-cls}-date {
          padding-left: 4px;
          padding-right: 0;
          border-radius: @picker-panel-cell-boundary-border-radius 0 0
            @picker-panel-cell-boundary-border-radius;

          .@{picker-prefix-cls}-date-value {
            border-radius: @picker-panel-border-radius-cell_selected 0 0
              @picker-panel-border-radius-cell_selected;
          }
        }
      }
    }
  }
}
