# Calendar : 4500 BC to 4500 AD — Calculate the day of the week > Date calculator with lunar and planetary information across millennia. (iPhone/iPad app by 俊 姜.) - Source: https://appshunter.io/ios/app/calendar-4500-bc-to-4500-ad/id1384298291 (this page in markdown: same URL + `.md`) - Developer: [俊 姜](https://appshunter.io/developer/974809005) - Category: Utilities - Price: $1.99 - Rating: 5.00/5 from 2 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 6 MB - Languages: American English - Released: 2018-06-04 - Data updated: 2026-08-22 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calendar-4500-bc-to-4500-ad/id1384298291/reviews.md ## What is Calendar? Calculate the day of the week for any date ! From 4,500 B.C. to 4,500 A.D. ! 9000+ years ! Shows the Moon phases and positions of planets ! • Features in 30 calendar languages Sunday, May 20, 2018 English (Sunday, May 20, 2018) Chinese (公元2018年5月20日星期天) Korean (2018년5월20일 일요일) Japanese (平成30年5月20日 日曜日) Dutch (Zondag 20 mei, 2018) German (Sonntag 20 Mai, 2018) Russian (Воскресенье 20 мая, 2018) French (le dimanche 20 mai, 2018) Swedish (Söndag 20 maj, 2018) Turkish (Pazar, 20 Mayıs, 2018) Icelandic (Sunnudagur, 20 maí, 2018) Danish (Søndag, 20 maj, 2018) Spanish (Domingo 20 mayo, 2018) Norwegian (Søndag, 20 mai, 2018) Hindi (रविवार, 20 मई, 2018) Ukrainian (Неділя, 20 травня, 2018) Tamil (Ñāyiṟu, mē 20, 2018) Malay (Ahad, 20 Mei, 2018) Portuguese (Domingo, 20 mai, 2018) Czech (Neděle, 20 května, 2018) Slovak (Nedeľa, 20 máj, 2018) Hungarian (2018, május 20, vasárnap) Serbian (Недеља, 20 маја, 2018) Romanian (Duminică, 20 mai, 2018) Macedonian (Недела, 20 мај, 2018) Laotian (2018 phudsapha 20 vnoathid) Latvian (Svētdiena, 20 maija, 2018) Polish (Niedziela, 20 maja, 2018) Croatian (Nedjelja, 20 svibnja, 2018) Indonesian (Minggu, 20 Mei, 2018) You can switch between 30 languages instantly within the app. • Julian Date (JD) The day starts at noon on Monday January 1, 4713 B.C. For example, the Julian Date for 00:30 UT January 1, 2013, is 2456293.52 Days. • Islamic Calendar It is the lunar calendar also known as the Hijri calendar. Due to the fact that the Islamic calendar relies on certain variable methods of observation, it varies by different persons, rather than actual astronomical calculations. • Chinese Calendar (农历) It is a Lunisolar calendar, has been used by Chinese for thousands of years. For example, the date 22:30 May 20, 2018, it is 农历戊戌(狗)年四月初六 or 戊戌年 丁巳月 壬子日 辛亥时. • Korean Calendar (음력) The traditional Korean calendar, is still used to determine the Lunar New Year (설날) and the Mid-Autumn Day (추석) by the Korean people. It is similar to the Chinese calendar. • 3D Solar System and Earth-Moon System Super easy to navigate and to find where the planets are at any time between 4500 B.C. to 4500 A.D. • Week starts with Sunday or Monday 2 modes: Mon Tue Wed Thu Fri Sat Sun or Sun Mon Tue Wed Thu Fri Sat • Day Count (unit:days, months, years) For example, May 20, 2018 minus May 20, 1990 equals 10958 (Days) or 30 (Years) or 360 (Months) • Julian Calendar Useful for history study. For example, the October Revolution occurred on 25 October, 1917 in Russia. At that time, Russians were using the Julian calendar. In the Gregorian calendar, it is on 7 November, 1917. ## Key features - Day of the week calculation - Moon phases and planet positions - Julian Date conversion - Islamic, Chinese, and Korean calendars - 30 language support - 3D Solar System and Earth-Moon System - Customizable week start day ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/calendar-4500-bc-to-4500-ad/id1384298291/reviews.md ### 5/5 — Nice *2025-08-17* Nice until the 4599 app crashed and I want it 10000 BC to 10000 AD calendar can you fix the crash and add Arabic language please ### 5/5 — Nice App to go back in Time *2020-05-02* This is an excellent app and suits my purpose well. The developer has made going back in time a simple adventure.My only complaint is there is no landscape mode for use on a iPad in a case i.e. “Smart Keyboard”. Fast response from developer which added a star! I am going to recommend this app across social media sites, Great App! **Developer response:** Thanks for your suggestion! ### 5/5 — Calendar, 4500 ad to 4500 bc *2019-03-29* This is a good app and well deserves 5 stars. I am a blind person who uses voiceover on an iphone 7 and my only issue with the app is that the function buttons are not clearly labelled so you don’t know what they are for. Other than that it is a useful little app. I would like to have been able to write to the developer and explain to them about the issue with the function buttons but don’t appear to be able to do so. I am pleased with it though. **Developer response:** So kind of you! Thank you very much! ## Frequently asked questions about Calendar ### What is the date range supported by Calendar : 4500 BC to 4500 AD? Calendar : 4500 BC to 4500 AD supports an extensive range of dates, spanning from 4,500 years BC to 4,500 years AD, covering over 9000 years of history. ### Does Calendar : 4500 BC to 4500 AD show astronomical information? Yes, the app displays moon phases and the positions of planets. It also features a 3D Solar System and Earth-Moon System for easy navigation. ### How many languages does Calendar : 4500 BC to 4500 AD support? The app offers features in 30 different calendar languages, allowing users to switch between them instantly within the application. ### What types of calendars are included in Calendar : 4500 BC to 4500 AD? In addition to the standard Gregorian calendar, it includes the Julian Date, Islamic (Hijri), Chinese (Lunisolar), and Korean calendars. ### Can I customize the start of the week in Calendar : 4500 BC to 4500 AD? Yes, you can choose whether your week starts on Sunday or Monday. The app provides two distinct modes for week display. ### What is the price of Calendar : 4500 BC to 4500 AD? Calendar : 4500 BC to 4500 AD is a paid application, priced at $1.99. It does not contain advertisements or in-app purchases. ### Is Calendar : 4500 BC to 4500 AD available on all devices? The app is supported on iPhone, iPad, and iPod devices. It is rated for ages 4 and up. ### How often is Calendar : 4500 BC to 4500 AD updated? The latest version of Calendar : 4500 BC to 4500 AD is 1.3, which was last updated on August 15, 2025. This indicates a recent update history. ## Version history (last 3 releases) ### 1.3 — 2025-08-15 Built with iOS SDK 18. ### 1.2 — 2022-03-23 Compatible with more iOS devices. ### 1.0 — 2018-05-21 This app has been updated by Apple to display the Apple Watch app icon. ## Apps similar to Calendar | App | Rating | Price | Category | | --- | --- | --- | --- | | [ZeroCounter](https://appshunter.io/ios/app/zerocounter/id990824557) | 5.0 (2) | Free | Utilities | | [易历知食](https://appshunter.io/ios/app/id1645643948) | — | $2.99 | Utilities | | [DaterMe](https://appshunter.io/ios/app/daterme/id1013502066) | — | $4.99 | Utilities | | [BatteryNow - Big Digital Clock](https://appshunter.io/ios/app/batterynow-big-digital-clock/id460872951) | 4.0 (1) | $0.99 | Utilities | | [License Plate Glossary](https://appshunter.io/ios/app/license-plate-glossary/id6749487899) | — | Free | Utilities | | [Countdowns by DGR Labs](https://appshunter.io/ios/app/countdowns-by-dgr-labs/id6758349780) | 5.0 (2) | Free | Utilities | ## More apps by 俊 姜 - [Telegraph - Morse Code !](https://appshunter.io/ios/app/telegraph-morse-code/id985978176) - [Dancing Butterfly](https://appshunter.io/ios/app/dancing-butterfly/id988280926) - [I Ching - Smart Chinese Wisdom](https://appshunter.io/ios/app/i-ching-smart-chinese-wisdom/id989785470) - [Quran Plus - Islamic Calendar](https://appshunter.io/ios/app/quran-plus-islamic-calendar/id989829373) - [Buddha - Magic Prayer Wheel !](https://appshunter.io/ios/app/buddha-magic-prayer-wheel/id1011711750) - [3D Astronomy : Celestial Globe](https://appshunter.io/ios/app/3d-astronomy-celestial-globe/id1011717212) All apps by 俊 姜: https://appshunter.io/developer/974809005 ## Related topics [4500](https://appshunter.io/ios/topics/4500) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*