With this browser-based application, you can convert any date from the Gregorian calendar (that we currently use) to the older Julian calendar. You can enter multiple dates from different centuries as the input and see how the Gregorian dates compare to the Julian dates. You can change the Julian date format in the output and display the clock time in 12hr or 24hr format. Additionally, you can find the Julian day for each date with arbitrary precision. Created by computer nerds from team Browserling.
With this browser-based application, you can convert any date from the Gregorian calendar (that we currently use) to the older Julian calendar. You can enter multiple dates from different centuries as the input and see how the Gregorian dates compare to the Julian dates. You can change the Julian date format in the output and display the clock time in 12hr or 24hr format. Additionally, you can find the Julian day for each date with arbitrary precision. Created by computer nerds from team Browserling.
This is a quick online utility for calculating the Julian calendar date from the given Gregorian calendar date. If you didn't know, the Gregorian calendar is the modern calendar that we use today and the Julian calendar is the older calendar with an error that we used a couple of hundred years ago. In the modern Gregorian calendar, a year lasts 365.2425 days. This means that a common year consists of 365 days, and every 4 years there's a leap year consisting of 366 days (with an exception of the years that are divisible by 100 and not divisible by 400 years). The Julian calendar is less precise, and according to it, the year consists of 365.25 days, which means that every 4th year is a leap year. As a result, every 400 years the Gregorian and Julian calendars shift by 3 days. Our calculator allows you to convert any date from the Gregorian calendar to the Julian calendar. For example, if you enter the current calendar date as the input, such as 2022-05-06, you'll get 2022-04-23 as the Julian calendar date as the output. By activating the checkbox in the options, you can also display the Julian day. The Julian day is a continuous count of the days that have passed since the noon of January 1, -4712 (in Julian calendar), which is the same as November 24, -4713 (in Gregorian calendar). For example, the Julian day (JD) for the current calendar date 2022-05-06 is 2459705.5. You can control the accuracy of the Julian day in the options by specifying the number of digits in the decimal part. You can also customize the Julian date output format by printing the clock time, day of the week, and spelled months. If necessary, you can also create a custom output date format by switching to the custom templating mode and creating a date template using the YYYY, MM, DD, etc. notation that you can find in the options. Finally, if the calendar date has a time part, then you can change the 24-hour time to a 12-hour time (or the other way around) and control the padding of clock digits. Timeabulous!
This is a quick online utility for calculating the Julian calendar date from the given Gregorian calendar date. If you didn't know, the Gregorian calendar is the modern calendar that we use today and the Julian calendar is the older calendar with an error that we used a couple of hundred years ago. In the modern Gregorian calendar, a year lasts 365.2425 days. This means that a common year consists of 365 days, and every 4 years there's a leap year consisting of 366 days (with an exception of the years that are divisible by 100 and not divisible by 400 years). The Julian calendar is less precise, and according to it, the year consists of 365.25 days, which means that every 4th year is a leap year. As a result, every 400 years the Gregorian and Julian calendars shift by 3 days. Our calculator allows you to convert any date from the Gregorian calendar to the Julian calendar. For example, if you enter the current calendar date as the input, such as 2022-05-06, you'll get 2022-04-23 as the Julian calendar date as the output. By activating the checkbox in the options, you can also display the Julian day. The Julian day is a continuous count of the days that have passed since the noon of January 1, -4712 (in Julian calendar), which is the same as November 24, -4713 (in Gregorian calendar). For example, the Julian day (JD) for the current calendar date 2022-05-06 is 2459705.5. You can control the accuracy of the Julian day in the options by specifying the number of digits in the decimal part. You can also customize the Julian date output format by printing the clock time, day of the week, and spelled months. If necessary, you can also create a custom output date format by switching to the custom templating mode and creating a date template using the YYYY, MM, DD, etc. notation that you can find in the options. Finally, if the calendar date has a time part, then you can change the 24-hour time to a 12-hour time (or the other way around) and control the padding of clock digits. Timeabulous!
In this example, we load January 15th, 2010 as the input, which is the day of the longest solar eclipse of the 21st century. We convert this Gregorian date to the Julian calendar and get the date 2010-01-02 in the output. As we can see, the difference between the Gregorian and Julian calendars in 2010 is 13 days.
In this example, we convert multiple dates from each century of the Gregorian calendar to the Julian calendar. We start with the date 2000-06-30 and decrease each date by 100 years. The first year 2000 is divisible by 100 and 400, so it is a leap year in both calendars. The following 3 years (1900, 1800, 1700) are common years in the Gregorian calendar but they are leap years in the Julian calendar, so they shift by one calendar day. If you look closely, then every 4 input dates (which span over 400 years) are shifted by 3 days in the output dates. We also display the Julian day for each output date and use a custom output date format.
In this example, we find the beginning of the Julian Period, when the Julian day (JD) is equal to 0. According to the Gregorian calendar, this date falls on the noon of Nov 24, 4714 BC (which is the same date as Nov 24, -4713 – notice how a "BC" date is offset by one compared to a negative date). We paste this date into the input field as the first date and then increment the following dates by various amounts to show you various interesting JD numbers ranging from 0 to 10,000,000. To put these numbers in perspective, we add a recent 21st-century date at the end of the list, which has the Julian day count of 2451673.3014 (the precision is 4). We don't use padding in the example, but we do show the time part of the date, which, by the way, is the same in both the Gregorian and Julian calendars.
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!
