Dates & time

List every date between two endpoints, every N days, weeks, months or years.

Find the weekday (Monday, Tuesday…) of any past or future date.

Find the number of a day within its year (1 to 365 or 366) and the days remaining.

Get the next N dates of a daily, weekly, monthly or yearly recurrence.

Calculate an exact age in years, months and days from a date of birth and any reference date.

Calculate the time between two dates in years, months and days, in total days and in weeks.

Add or subtract days, weeks, months or years from a date and get the resulting date with its day of the week.

Count the business days between two dates and shift a date by a number of working days, for a Monday–Friday or other working week.

Calculate the duration between a start time and an end time, even past midnight.

Convert hours and minutes to decimal hours or hundredths and back.

Convert milliseconds, seconds, minutes, hours, days, weeks and working days.

Work out overtime above 35 hours, the +25 % and +50 % premiums of French law or your own rates, and the annual quota.

Find out how many days are left until a date, or how many have passed since, with the equivalent in weeks.

Turn overtime into replacement rest or work out the mandatory rest due beyond the annual overtime quota under French law.

Find the ISO week number of a date, its ISO year and the Monday-to-Sunday dates.

Estimate pay for a Sunday or public holiday worked under French law: double pay on 1 May and mayor’s Sundays, +30 % in large food stores, or your agreement’s rate.

Add up the hours you worked this week, breaks deducted, in hours and minutes and in decimal hours.

Create a monthly XLSX timesheet: one row per day, start and end times, breaks, hours worked, decimal hours and totals calculated by formulas.

Calculate hours worked above a French part-time contract, their 10% and 25% premiums and the resulting pay.

Count the hours of a shift that fall in the night period (9 pm – 6 am by default, French rule) and estimate a configurable night premium.

Convert a part-time percentage into hours per week, month and year, or find the percentage of a weekly schedule.

Calculate the business hours between two dates from your daily working hours.

Add several hour-and-minute durations and get the total as h:mm, decimal hours and minutes.

Estimate French RTT days: a 39-hour week against the 35-hour reference, or rest days under a 218-day annual package for a given year.

Work out the paid-leave days earned in France over the reference period, including during non-occupational sick leave.

Convert a Unix timestamp to a readable date and time, or a date to a timestamp, in seconds or milliseconds.

Convert a date between MM/DD/YYYY, DD/MM/YYYY and ISO YYYY-MM-DD, in both directions.

Express the gap between two date-times as “3 days ago” or “in 2 hours”.

Convert a date and time from one time zone to another, daylight saving time included.

Find meeting slots that fall within the working hours of two time zones.

Convert a Persian (Solar Hijri, Jalali) calendar date to a Gregorian date, or the other way round, with the date in Persian, leap year and Nowruz date.

Convert a date between the Gregorian calendar and the Meiji, Taishō, Shōwa, Heisei and Reiwa eras.

Convert a Julian (Old Style) calendar date to a Gregorian date, or the other way round, with the gap in days, the weekday and the Julian Day Number.

Find when golden hour and blue hour start and end, morning and evening, for any place and date.

Work out the length and direction of an object’s shadow from the place, date, time and its height.

Convert dates between the 13-month Ethiopian calendar and the Gregorian calendar.

Convert dates between the 13-month Coptic calendar and the Gregorian calendar.

Convert dates between the Indian national Saka calendar and the Gregorian calendar.

Convert dates between the Nepali Bikram Sambat calendar and the Gregorian calendar.

Calculate Fajr, Sunrise, Dhuhr, Asr, Maghrib and Isha times for your city.

Calculate the direction of the Kaaba from your city or coordinates: bearing in degrees from true north and distance to Makkah.

Convert an Umm al-Qura Hijri date to a Gregorian date, or the other way round, with weekday and an after-sunset option.

Calculate Friday candle-lighting and Havdalah times for your city and the week you choose.

Convert a Hebrew (Jewish) calendar date to a Gregorian date, or the other way round, with Adar I and Adar II, the date in Hebrew and an after-sunset option.

Find the date of Easter for any year, Western and Orthodox, with Ash Wednesday, Ascension, Pentecost and the related holidays.

Find today’s Rahu Kalam (Rahu Kaal) for your city from the actual local sunrise and sunset.

Get the 8 day and 8 night Choghadiya for your city, calculated from the actual local sunrise and sunset.