With this browser-based application, you can find the day of the year for any given calendar date. It counts the number of days that have passed since the beginning of the given year until it reaches the given date and outputs this number. You can enter multiple calendar dates at once and get results for each date. You can also print the original dates in the output to visually see the day count and the date at the time. Note that the day count changes depending on if it's a leap year or a common year. Created by computer nerds from team Browserling.
With this browser-based application, you can find the day of the year for any given calendar date. It counts the number of days that have passed since the beginning of the given year until it reaches the given date and outputs this number. You can enter multiple calendar dates at once and get results for each date. You can also print the original dates in the output to visually see the day count and the date at the time. Note that the day count changes depending on if it's a leap year or a common year. Created by computer nerds from team Browserling.
This is a quick online utility for calculating the day number of any calendar date. It accepts any date as the input and finds out which day since the beginning of the year it is. For example, for the date 2024-01-01, the program will display "1", which means it's the 1st day of the year; for the date 2024-02-19, the program will display "50" as it's the 50th day of the year; and for the date 2024-12-31, the program will display "366" as it's the 366th day of the year (this year is a leap year). If the year is a common year, such as 2025-12-31, then the program will display "365" as common years have 365 days. You can find the year days for multiple calendar dates at once by entering each date on a separate line in the input field. The result for each date is printed in the corresponding output field. To always be able to understand which result is for which date, you can also print the given calendar date next to the day number. Timeabulous!
This is a quick online utility for calculating the day number of any calendar date. It accepts any date as the input and finds out which day since the beginning of the year it is. For example, for the date 2024-01-01, the program will display "1", which means it's the 1st day of the year; for the date 2024-02-19, the program will display "50" as it's the 50th day of the year; and for the date 2024-12-31, the program will display "366" as it's the 366th day of the year (this year is a leap year). If the year is a common year, such as 2025-12-31, then the program will display "365" as common years have 365 days. You can find the year days for multiple calendar dates at once by entering each date on a separate line in the input field. The result for each date is printed in the corresponding output field. To always be able to understand which result is for which date, you can also print the given calendar date next to the day number. Timeabulous!
In this example, we calculate which day of the year the summer solstice of 2022 occurs. The summer solstice, also called midsummer, happens on June 21, 2022, so we enter this date in the input and find in the output that it's the 172nd day of the year.
In this example, we find the day number for the beginning date of each season in a leap year and a common year. We take 2025 as a common year and enter four dates for it: the beginning of spring (2025-03-01), the beginning of summer (2025-06-01), the beginning of autumn (2025-09-01), and the beginning of winter (2025-12-01). For a leap year, we use the year 2024 and enter the same dates. The output shows the day of the year for each season and we print them together with the original input season dates.
In this example, we generate day counter values for all calendar dates that are 10 days apart and that are divisible by 10. The list starts on 2015-01-10, which is the 10th day, and then each next day is incremented by 10, so the next one is 2015-01-20 (20th day), 2015-01-30 (30th day), etc.
This example shows various magic day numbers. A magic day number is either a round number, such as 100, 200, 300, or it has repeating digits, such as 101, 111, 202, 222, 303, 333, or it has increasing or decreasing digit sequences, such as 123 and 321.
In this example, the mischievous troublemaker Fibonacci once again had a go at our day counting algorithm. His first idea was to try finding Fibonacci days. These are the days that correspond to Fibonacci numbers. It turns out there are 13 days in every year that correspond to Fibonacci numbers. Here they are for the year 2020, which is a leap year. For a common year, they would be off by one starting from the March date.
In this example, we let another mathematician play with our tool. She immediately decided to find all calendar days that correspond to the constant pi 3.1415926535. The first day is the whole part of pi, which equals 3, and the next five days are pairs of pi digits – 14, 15, 92, 65, and 35.
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!
