async getNewMembersToday({siteTimezone}) {
        const startOfToday = moment.tz(siteTimezone).startOf('day').utc().format(dateFormat);
        const result = await this._db.knex.raw('SELECT count(id) AS total FROM members WHERE created_at >= ?', [startOfToday]);
        return this._isSQLite ? result[0].total : result[0][0].total;
    }
Fetches member signups for current day

@param {String} siteTimezone - site's current timezone