MQL5 Developer Needed – Build Market Open/Close Time Indicator with API Integration

🧩 Project Requirements

🔎 Primary Features

• Show market open and close times for the symbol the indicator is attached to.
• Use an external API to retrieve trading session data.
• Possible sources include:
• TradingHours.com
• Polygon.io
• JBlanked.com Economic Calendar
• Handle time zone conversions correctly (UTC ↔ local ↔ broker/server time).
• Visually display session times using a subwindow style indicator, similar to a horizontal bar or overlay panel showing “OPEN” and “CLOSED” windows clearly.
• Must also show known public holidays or close days e.g. 4^th July etc for given symbol;
• Json file Config ability to track multiple symbols at same time.

🛠 Technical Features

• Written in pure MQL5, no DLLs.
• Creates a visual panel or histogram bar in a subwindow (Indicator Style 1).
• Automatically updates daily using scheduled calls (or per tick if light).
• Includes a class module (e.g., Class_MarketHours.mqh) that exposes:

datetime GetMarketOpen(string symbol);

datetime GetMarketClose(string symbol);

bool IsMarketOpen(string symbol, datetime time_check = TimeCurrent());

TimetoMarketClose()

TimeSinceMarketOpen()

Within30MinutesOfMarketCloseOrOpen()

Within30MinutesOfMarketCloseForTheWeek()

PublicHolidays()

📦 Deliverables

• MarketHours.mq5 indicator
• Class_MarketHours.mqh for programmatic use in other EAs or indicators
• MarketHoursConfig.mqh or JSON config (optional)
• Holidays
• All source code
• Sample usage EA/indicator showing how to use the class

💡 Visual & Functional Goals

• Visually show today’s open and close period as a band or block in a subwindow
• Label with market status, e.g.:
• ✅ “Open 09:30 - 16:00 (NYSE)”
• ❌ “Closed – Reopens in 3h 12m”
• Optional: display next open/close countdown
• Should auto-detect the symbol’s exchange/market or allow override

🌐 API Notes

You may suggest the best API for market hour data. You must:

• Implement proper API call logic (e.g., WebRequest)
• Handle API key securely (stored in input or config file)
• Parse and cache data for efficiency

🔐 Requirements

• Strong MQL5 + OOP skills
• Experience with HTTP API/WebRequest in MQL5
• Must know how to handle timezone conversion between server, local, and UTC
• Prior work on session/time-based indicators is a bonus

💰 Budget & Timeline

• Budget: Flexible, based on experience and API complexity
• Timeline: 7–10 days preferred

📝 How to Apply

Send:

• Brief proposal of how you'd approach API integration and timezone handling
• Relevant past work (esp. involving WebRequest or custom time/session indicators)
• Confirmation that full MQL5 source code will be provided

It may look similar to the following with added annotations on open and close and public holidays.

Indicator would be a traffic light system

Open = green line

Closed = red line

Within 30 minutes of a close before or after =