As-salamu alaykum,Because I spend most of my workday inside ChatGPT, I built [Muslim Prayer Reminder](https://chatgpt.com/plugins/plugin_asdk_app_6a9bca660b2c8191a1146aa615cad6f5) to check prayer timetables, verify due status, and set up prayer reminders directly in chat.Most prayer apps hide which calculation authority they default to, or interrupt you with full-screen ads when you just want to know if prayer time has arrived. Here is what this plugin actually does:* **Daily timetable + status checks**: Returns Fajr, Dhuhr, Asr, Maghrib, and Isha in your local timezone with automatic DST adjustment. Sunrise is shown separately as a timetable reference, not an obligatory prayer.* **Scheduled task reminders**: Works with ChatGPT Scheduled Tasks to periodically check your prayer status and alert you when prayer is due during your workday.* **12 calculation methods + Shafi/Hanafi Asr**: Supports Umm al-Qura, Muslim World League, Egyptian General Authority, Karachi, ISNA (North America), and 7 others. Every response states the exact authority used and why it was selected.* **Saved fixed city + timetable order validation**: Save your default city, calculation authority, and per-prayer minute offsets. Before saving custom offsets, the service validates them against today’s and tomorrow’s timetables so an offset cannot push prayer events into an invalid sequence.* **Travel mode + high-latitude disclosure**: Query any city or coordinate/timezone pair on the fly without overwriting your saved home settings. In high-latitude or polar locations where standard formulas fail, it explains the exact approximation applied so you can cross-check with your local masjid.* **Bilingual reminder checks**: Checks whether a prayer reminder is due during your chat session in Arabic or English, with duplicate-check suppression.Try these prompts:* "What are today’s prayer times in Riyadh?"* "Check if any prayer is currently due."* "Save Riyadh as my fixed city, use the Umm al-Qura calculation method, and select Hanafi for Asr."The plugin is completely free—no subscriptions, ads, or purchases: [Open Muslim Prayer Reminder on ChatGPT](https://chatgpt.com/plugins/plugin_asdk_app_6a9bca660b2c8191a1146aa615cad6f5)If you test it with your city or local mosque timetable, let me know if any calculation method or offset behavior needs refinement.