Mailspring/app/static/style/components/date-picker-popover.less

@import 'ui-variables';

.date-picker-popover {
  .menu .item {
    .time {
      display: none;
      float: right;
      padding-right: @padding-base-horizontal;
    }
    &.selected,
    &:hover {
      .time {
        display: inline-block;
      }
    }
  }
}