Do once a day in specific time

Hi, I need to draw a rectangle each day at 7 am (London Time) that its width is 1 hour and its width is high and low on that 1 hour. But firstly it doesn't repeat every day and secondly I have no idea how can draw a rectangle with 1hour width

using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class NewIndicator : Indicator
    {
        [Parameter("ATR Period", DefaultValue = 7)]
        public int ATRPeriod { get; set; }

        [Output("Main")]
        public IndicatorDataSeries Result { get; set; }
        private AverageTrueRange _ATR;

        private MarketSeries seriesHour;
        private MarketSeries seriesCurrent;

        private AverageTrueRange _ATRHour;
        private AverageTrueRange _ATRCurrent;

        protected override void Initialize()
        {
            // Initialize and create nested indicators
            _ATR = Indicators.AverageTrueRange(ATRPeriod, MovingAverageType.Exponential);
            seriesHour = MarketData.GetSeries(TimeFrame.Hour);
            seriesCurrent = MarketData.GetSeries(MarketSeries.TimeFrame);
        }

        public override void Calculate(int index)
        {
            if (MarketSeries.TimeFrame <= TimeFrame.Hour)
            {
                var currentHour = int.Parse(Server.Time.ToString("%H"));
                if (currentHour == 7)
                {
                    DrawRectangle(index);
                }
            }
        }

        public void DrawRectangle(int index)
        {
            Chart.DrawRectangle("Rectangel" + index, ???);
        }
    }
}