With this browser-based application, you can convert any date from the ancient Julian calendar to the modern Gregorian calendar that we use today. You can paste several Julian dates into the input and calculate the corresponding Gregorian calendar dates in the output. If you enter several Julian dates (one per line), you can instantly see the difference in days between both calendars. Additionally, you can change the Gregorian calendar date format in the options. Created by computer nerds from team Browserling.
With this browser-based application, you can convert any date from the ancient Julian calendar to the modern Gregorian calendar that we use today. You can paste several Julian dates into the input and calculate the corresponding Gregorian calendar dates in the output. If you enter several Julian dates (one per line), you can instantly see the difference in days between both calendars. Additionally, you can change the Gregorian calendar date format in the options. Created by computer nerds from team Browserling.
This is a quick online utility for calculating the Gregorian calendar date from the given Julian calendar date. The Julian calendar was introduced on January 1, 45 BC by Julius Caesar. In this calendar, the length of the year was 365¼ days, which means every four years the extra quarter of the day formed an additional day. A year with this extra day, by the way, is called a leap year. In 1582, the Julian calendar was replaced by the Gregorian calendar, which is the modern calendar that we use today. The Gregorian calendar is astronomically more accurate and the year lasts 365.2425 days. In the Gregorian calendar, years that are divisible by 4 are considered leap years, with the exception of years that are divisible by 100 and not divisible by 400. For example, the years 2100, 2200, 2300, and 2400 in the Gregorian calendar have 365, 365, 365, and 366 days (only the year 2400 is a leap year with an extra calendar day), however, in the Julian calendar, they have 366, 366, 366, and 366 days (there are 4 extra calendar days). It means that for every 400 years, the Gregorian calendar drifts ahead of the Julian calendar by 3 days. This is also the key reason why the Julian calendar was replaced by the Gregorian version. In this program, we implemented a precise mathematical algorithm that converts any date from one calendar standard to the other. Once you enter a Julian date in the format "YYYY-MM-DD" in the input, you'll get a Gregorian date in the output. Our tool can also convert multiple dates at once if you enter them in a column, one after another on separate lines. You can choose the Gregorian date format for the output by selecting a format from the list in the options or by creating a custom date format from a template using date component abbreviations (see the abbreviations cheat sheet in the options). You can also add or remove date padding (so that all date components are 2 or 4 digits long) and turn the time part into a 12-hour or 24-hour clock format. If you need to perform the reverse operation and convert a modern Gregorian date to the older Julian calendar, you can use our Gregorian to Julian Date Calculator utility. Timeabulous!
This is a quick online utility for calculating the Gregorian calendar date from the given Julian calendar date. The Julian calendar was introduced on January 1, 45 BC by Julius Caesar. In this calendar, the length of the year was 365¼ days, which means every four years the extra quarter of the day formed an additional day. A year with this extra day, by the way, is called a leap year. In 1582, the Julian calendar was replaced by the Gregorian calendar, which is the modern calendar that we use today. The Gregorian calendar is astronomically more accurate and the year lasts 365.2425 days. In the Gregorian calendar, years that are divisible by 4 are considered leap years, with the exception of years that are divisible by 100 and not divisible by 400. For example, the years 2100, 2200, 2300, and 2400 in the Gregorian calendar have 365, 365, 365, and 366 days (only the year 2400 is a leap year with an extra calendar day), however, in the Julian calendar, they have 366, 366, 366, and 366 days (there are 4 extra calendar days). It means that for every 400 years, the Gregorian calendar drifts ahead of the Julian calendar by 3 days. This is also the key reason why the Julian calendar was replaced by the Gregorian version. In this program, we implemented a precise mathematical algorithm that converts any date from one calendar standard to the other. Once you enter a Julian date in the format "YYYY-MM-DD" in the input, you'll get a Gregorian date in the output. Our tool can also convert multiple dates at once if you enter them in a column, one after another on separate lines. You can choose the Gregorian date format for the output by selecting a format from the list in the options or by creating a custom date format from a template using date component abbreviations (see the abbreviations cheat sheet in the options). You can also add or remove date padding (so that all date components are 2 or 4 digits long) and turn the time part into a 12-hour or 24-hour clock format. If you need to perform the reverse operation and convert a modern Gregorian date to the older Julian calendar, you can use our Gregorian to Julian Date Calculator utility. Timeabulous!
This example takes a Julian calendar date 2001-01-02 as the input and converts it to a Gregorian calendar date. In the output, we get 2001-01-15 and it's an important date, as on this day, Wikipedia was created. As you can see, the difference between both calendar dates is 13 days. In fact, all dates from Feb 29, 1900 to Feb 28, 2100 of the Julian calendar (which correspond to the dates from Mar 13, 1900 to Mar 13, 2100 of the Gregorian calendar) have a difference of 13 days as compared to the Gregorian calendar.
In this example, we go back in time when the transition from the Julian calendar to the Gregorian calendar was announced. The reform in the 16h century by Pope Gregory XIII shifted the calendar by 10 days. Namely, Thursday, October 4, 1582 (still in the Julian calendar) was followed by Friday, October 15, 1582 (now the Gregorian calendar) and October 5 to October 14 were skipped. In the output, we print the Gregorian date for the day that follows the final Julian calendar day in a custom format, and we also include the day of the week.
In the input of this example, we enter multiple Julian calendar dates that are all 400 years apart. We start the dates at "400-01-01 06:00:00" and end the list with the date "2400-01-01 00:00:00". The output shows that the difference in the number of days between both calendars grows as the years increase. To be precise, every 400 years the difference between the Julian and Gregorian calendars increases by 3 days. In the output, we remove the padding and display the clock time (which doesn't change between calendars) in a 12-hour format.
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
Draw a binary clock that shows time in base two.
Draw a clock in Salvador Dali style showing custom time.
Draw a weird-looking clock that shows a particular time.
Draw a π clock with π hours in a day.
Draw a 360° clock with 360 degrees in a day.
Create a GIF animation of an analog clock.
Create a GIF animation of a digital clock.
Create a GIF animation of a clock that's broken.
Draw a daily calendar for a single day.
Draw a weekly calendar for any week of the month.
Draw a yearly calendar for the entire year.
Draw a calendar that shows moon phases.
Draw a calendar that shows the seasons and Sun's position.
Draw a calendar that shows when the Sun rises and sets.
Draw a calendar that shows when the Moon rises and sets.
Draw an animation that counts down (or up) time.
Create a GIF animation of a sand clock.
Animate a timeless clock that goes in an infinite spiral.
Visualize the given clock time as a pie chart.
Visualize the current year as a pie chart.
Visualize the given clock time as a bar chart.
Visualize the current year as a bar chart.
Visualize the given clock time as a pixel wall (1px = 1sec).
Visualize the current year as a pixel wall (1px = 1day).
Visualize the given clock time as bubbles.
Visualize the current year as bubbles.
Visualize the given clock time as an arrow.
Quickly calculate time passed and left in the current day as pct.
Quickly calculate time passed and left in the current year as pct.
Convert regular clock time to binary clock time (bintime).
Quickly regular calendar date to binary date (bindate).
Convert regular clock time to decimal clock time (dectime).
Quickly regular calendar date to decimal date (decdate).
Convert regular clock time to hexadecimal time (hextime).
Quickly regular calendar date to hexadecimal date (hexdate).
Create a GIF animation of the Moon for a particular month.
Create an animation of the Moon orbiting the Earth.
Create a 88 day animation of the Mercury orbiting the Sun.
Create a 225 day animation of the Venus orbiting the Sun.
Create a 365 day animation of the Earth orbiting the Sun.
Create a 687 day animation of the Mars orbiting the Sun.
Create a 4,330 day animation of the Jupiter orbiting the Sun.
Create a 10,756 day animation of the Saturn orbiting the Sun.
Create a 30,687 day animation of the Uranus orbiting the Sun.
Create a 60,190 day animation of the Neptune orbiting the Sun.
Create a 90,560 day animation of the Pluto orbiting the Sun.
Create an animation of all planets in the Solar System.
Create an animation of Phobos and Deimos orbiting Mars.
Animate Io, Europa, Ganymede, Callisto orbiting Jupiter.
Animate Titan, Rhea, Iapetus, Enceladus orbiting Saturn.
Animate Titania, Oberon, Umbriel, Ariel, Miranda orbiting Uranus.
Animate Triton, Nereid, and Proteus orbiting Neptune.
Animate Charon, Nix, Hydra, Kerberos, Styx orbiting Pluto.
Find dates when two or more planets align in a straight line.
Find dates when the solar eclipse happens.
Find dates when the lunar eclipse happens.
Calculate your age based on the orbital period of other planets.
Represent a clock time as a matrix.
Represent a calendar date as a matrix.
Represent a clock time as a vector.
Represent a calendar date as a vector.
Draw a time series chart.
Given a bunch of time intervals, find overlapping intervals.
Generate a bunch of overlapping time intervals.
Generate a bunch of non-overlapping time intervals.
Generate random clock time intervals.
Given a bunch of date intervals, find overlapping intervals.
Generate a bunch of overlapping date intervals.
Generate a bunch of non-overlapping date intervals.
Generate random calendar date intervals.
Swap a clock's hour hand with minute hand.
Find the reverse of the given clock time.
Find the inverse of the given clock time.
Shift the given clock time by any time interval.
Change the clock scale from 24 hours to any other hours.
Generate a list of valid clock times (for testing).
Generate a list of invalid clock times (for testing).
Generate a list of valid calendar dates (for testing).
Generate a list of invalid calendar dates (for testing).
Create errors in the given clock times (for testing).
Create errors in the given calendar dates (for testing).
Convert a calendar date to seconds.
Convert seconds to a calendar date.
Create a crontab expression from human language.
Rewrite a crontab entry into human language.
Quickly find the week of the month of a calendar date.
Quickly find how many days have passed since start of the year.
Quickly find how many days are left till the end of the year.
Quickly find how many days are left till a specific date.
Find how many minutes are in the given seconds.
Find how many hours are in the given seconds.
Find how many days are in the given seconds.
Find how many weeks are in the given seconds.
Find how many months are in the given seconds.
Find how many years are in the given seconds.
Find how many seconds are in the given minutes.
Find how many hours are in the given minutes.
Find how many days are in the given minutes.
Find how many weeks are in the given minutes.
Find how many months are in the given minutes.
Find how many years are in the given minutes.
Find how many seconds are in the given hours.
Find how many minutes are in the given hours.
Find how many weeks are in the given hours.
Find how many months are in the given hours.
Find how many years are in the given hours.
Find how many seconds are in the given days.
Find how many minutes are in the given days.
Find how many weeks are in the given days.
Find how many months are in the given days.
Find how many years are in the given days.
Find how many seconds are in the given weeks.
Find how many minutes are in the given weeks.
Find how many hours are in the given weeks.
Find how many days are in the given weeks.
Find how many months are in the given weeks.
Find how many years are in the given weeks.
Find how many seconds are in the given months.
Find how many minutes are in the given months.
Find how many hours are in the given months.
Find how many days are in the given months.
Find how many weeks are in the given months.
Find how many years are in the given months.
Find how many seconds are in the given years.
Find how many minutes are in the given years.
Find how many hours are in the given years.
Find how many days are in the given years.
Find how many weeks are in the given years.
Find how many months are in the given years.
Find how old a human would be if he/she was a bird.
Find how old a bird would be if it was a human.
Convert clock time on Earth to clock time on Mars.
Convert clock time on Mars to clock time on Earth.
Convert Earth time to Star Trek's stardate.
Convert Star Trek's stardate to Earth time.
Print a list of clock times with hours equal mins equal secs.
Print a list of calendar dates with years equal months equal days.
Print a list of all clock times when hands are in a straight line.
Given clock times in various formats, convert them to one format.
Given calendar dates in various formats, make them the same format.
Cyclically shift HH, MM, SS time parts to the left or right.
Cyclically shift YYYY, MM, DD date parts to the left or right.
Perform freeform clock time arithmetics.
Perform freeform calendar date arithmetics.
Find the sum of hours plus minutes plus seconds.
Find the sum of years plus months plus days.
Find clock hand position so that hr + min + sec equals your value.
Find calendar date so that year + months + day equals your value.
Print all clock icons from 00:00 to 24:00.
Generate date and time that only Zalgo can understand.
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling our mission is to make people's lives easier, so we created this collection of time and date tools. All our tools share the same user interface, so as soon as you learn how to use one of the tools, you'll be a master of all tools. Behind the scenes, our time and date tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!
