سيد التقاويم

Discover the world of calendars with Master Calendar: Over 50 calendars to compare, convert, and view months, complete with prayer times, calendar events, and themes to suit your taste.

Compare, Convert, and View

• View today's date in your preferred primary and secondary calendars.

• Convert dates between calendars and see the original and converted dates together.

• View month tables that display two dates in a single table.

• Share date results and read information about available calendars.

Customize Your Experience
• Choose a light or dark theme.

• Change the app's appearance with available theme packs.

• Customize the calendars and criteria displayed in the date converter and upcoming calendar events.

• Select your primary and secondary calendars.

• Use the app in Arabic or English.

Track Prayers and Calendar Events
• View prayer times by city and your preferred calculation method.

• Track upcoming calendar events and set reminders for events that matter to you.

Extensive Calendar Library
Explore Hijri, Gregorian, Solar, and Specialized Calendars, as well as editions based on various astronomical and mathematical standards:

1. Al-Sami Calendar
2. Al-Sami Synoptic Calendar
3. Al-Wasmi Hijri Calendar
4. Official Umm Al-Qura Hijri Calendar
5. General Gregorian Calendar
6. Mukhtar Pasha Hijri Calendar
7. Al-Ujairi Hijri Calendar
8. Asas/Habash Hijri Calendar
9. Al-Wasi'i Hijri Calendar
10. Fatimid Hijri Calendar
11. Asas Al-Jahhaf Hijri Calendar
12. Hassan Al-Jabarti Permanent Calendar
13. Microsoft Hijri Calendar
14. Umm Al-Qura Hijri Calendar (Moonset Edition Q3)
15. Umm Al-Qura Hijri Calendar (Moonset Edition Q2)
16. Umm Al-Qura Hijri Calendar (Greenwich Edition)
17. Umm Al-Qura Hijri Calendar (12-Hour Timed Edition)
18. Umm Al-Qura Hijri Calendar (9-Degree Edition)
19. Universal Hijri Calendar Eastern Calendar
20. Western Universal Hijri Calendar
21. Indian Universal Hijri Calendar
22. Muhammadi Observational Hijri Calendar
23. Al-Adiriqawi Calendar
24. Standard Muhammadi Hijri Calendar
25. Hashemite Calendar
26. Al-Biruni Hijri Calendar
27. Gregorian Calendar
28. Julian Calendar
29. Gregorian Calendar Cycle 128
30. Astrologers' Calendar
31. Coptic Calendar
32. Saudi Solar Hijri Calendar
33. Al-Jalali Hijri Calendar
34. Iranian Observational Calendar
35. Ottoman Roman Calendar
36. Second Roman Calendar
37. First Roman Calendar
38. Al-Badi' Calendar
39. Al-Badi' Observational Calendar
40. Al-Badi' Calendar Based on Gregorian Principles
41. Muhsin Al-Burji Calendar
42. Amr Muhsin Standard Calendar
43. Qada' Al-Mu'minin Calendar
44. Ibn Qutaybah's Calendar of the Sun's Mansions
45. Calendar of the Sun's Mansions According to Umm al-Qura
46. Al-Tawali' Calendar
47. Al-Wasmi Sun Mansions Calendar
48. NASA Horoscopes Calendar (Hijri)
49. Hebrew Calendar
50. Muhammad Jawad Khazali Calendar
51. Muammar Gaddafi Calendar
52. Al-Sa'di Calendar
53. Al-Sami Calendar, Issue 0
54. Al-Sami Synoptic Calendar, Issue 0
55. Atlantic Calendar
56. Atlantic Synoptic Calendar

Specialized Astronomical and Mathematical Criteria

Available criteria include: the 9-degree criterion, the dawn new moon, the Umm al-Qura new moon, sunset 12 hours after the new moon, astronomical crescent visibility, 30-minute crescent visibility, lunar alignment, the return criteria (A, B, C), the Yallop criteria (A, B, C, D), the day after the new moon, the globalization of the local new moon, the vernal equinox, noon before the vernal equinox, and sunset with the vernal equinox.

Whether you use calendars in your daily life or are simply interested in exploring their systems and variations, Master Calendars provides you with the tools to compare and keep track of them all in one place.

Some calendars and features require a package purchase. The availability of calendars, themes, and features varies depending on the package chosen. Dates and prayer times depend on the calendar, calculation method, and selected settings.