toordinal() Function Of Datetime.date Class In Python Last Updated : 23 Aug, 2021 Comments Improve Suggest changes Like Article Like Report The toordinal() function is used to return the proleptic Gregorian ordinal of a specified datetime instance. Note: The Proleptic Gregorian ordinal gives the number of days elapsed from the date 01/Jan/0001. And here ordinal is called Proleptic since the Gregorian calendar itself is followed from October 1582. Syntax: toordinal() Parameters: This function does not accept any parameter. Return values: This function returns the proleptic Gregorian ordinal of a datetime instance. Example 1: Using today's date. Python3 # Python3 code to demonstrate # Getting the proleptic Gregorian # ordinal of a datetime instance # importing datetime and time module import datetime import time # Getting today's date todays_Date = datetime.date.fromtimestamp(time.time()); # Calling the toordinal() function over the # today's date date = todays_Date.toordinal(); # Printing the proleptic Gregorian ordinal # for the today's date print("Proleptic Ordinal for today's date: %s"%date); Output: Proleptic Ordinal for today's date: 737998 Example 2: Using today's date and time. Python3 # Python3 code to demonstrate # Getting the proleptic Gregorian # ordinal of a datetime instance # importing datetime and time module import datetime import time # Getting today's date and time todays_DateTime = datetime.datetime.now(); # Calling the toordinal() function over the # today's date and time DateTime = todays_DateTime.toordinal(); # Printing the proleptic Gregorian ordinal # for the today's date and time print("Proleptic Ordinal for today's date and time: %s"%DateTime); Output: Proleptic Ordinal for today's date and time: 737998 Example 3: Using a specific date. Python3 # Python3 code to demonstrate # Getting the proleptic Gregorian # ordinal of a datetime instance # importing datetime and time module import datetime import time # Initializing a date and time DateTime = datetime.datetime(1358, 8, 12, 1, 3, 4, 9); # Calling the toordinal() function over the # above date and time Date_Time = DateTime.toordinal(); # Printing the proleptic Gregorian ordinal # for the above given date and time print("Proleptic Ordinal for today's date and time: %s"%Date_Time); Output: Proleptic Ordinal for today's date and time: 495858 Comment More infoAdvertise with us Next Article weekday() Function Of Datetime.date Class In Python K Kanchan_Ray Follow Improve Article Tags : Python Python-datetime Practice Tags : python Similar Reads Python datetime module In Python, date and time are not data types of their own, but a module named DateTime in Python can be imported to work with the date as well as time. 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Syntax: datetime.isoweekday() Parameters: None Return Value: It returns an integer which corresponds to a day as per the table Integer ReturnedDay of the w 3 min read Datetime.replace() Function in PythonThe datetime.replace() method in Python allows you to modify specific parts of a datetime or date object without changing the original object. Instead, it returns a new modified object with the updated values.For example, suppose we booked a flight for March 15, 2025, at 10:00 AM, but it got resched 3 min read Python DateTime - strptime() Functionstrptime() is another method available in DateTime which is used to format the time stamp which is in string format to date-time object.Syntax: datetime.strptime(time_data, format_data)Parameter:time_data is the time present in string formatformat_data is the data present in datetime format which is 7 min read Python | time.time() methodTime module in Python provides various time-related functions. This module comes under Python’s standard utility modules. time.time() method of Time module is used to get the time in seconds since epoch. The handling of leap seconds is platform dependent. Note: The epoch is the point where the time 2 min read Python datetime.timetz() Method with ExampleThe timetz() function manipulates the objects of the DateTime class of the DateTime module. This function uses an instance method given to it via reference, and converts them, and returns a time object with the same hour, minute, second, microsecond, and fold and tzinfo attributes. Syntax: timetz() 3 min read Python - datetime.toordinal() Method with Exampledatetime.toordinal() is a simple method used to manipulate the objects of DateTime class. It returns proleptic Gregorian ordinal of the date, where January 1 of year 1 has ordinal 1. The function returns the ordinal value for the given DateTime object. If January 1 of year 1 has ordinal number 1 the 2 min read Get UTC timestamp in PythonUTC timestamp represents a specific point in time as measured from the "Unix epoch" — January 1, 1970, 00:00:00 UTC. This timestamp is often used in computing because it is not affected by time zones or daylight saving time, providing a consistent reference time across the globe. When working with t 3 min read Python datetime.utcoffset() Method with ExampleThe utcoffset() function is used to return a timedelta object that represents the difference between the local time and UTC time.This function is used in used in the datetime class of module datetime.Here range of the utcoffset is "-timedelta(hours=24) <= offset <= timedelta(hours=24)".If the 3 min read Timedelta classPython DateTime - Timedelta ClassTimedelta class is used for calculating differences between dates and represents a duration. The difference can both be positive as well as negative. 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For example: for two dates, 2025-05-03 18:45:00 and 2025-05-03 16:30:00, the time 3 min read Python | datetime.timedelta() functionPython timedelta() function is present under datetime library which is generally used for calculating differences in dates and also can be used for date manipulations in Python. It is one of the easiest ways to perform date manipulations. Syntax : datetime.timedelta(days=0, seconds=0, microseconds=0 4 min read Python timedelta total_seconds() Method with ExampleThe total_seconds() function is used to return the total number of seconds covered for the specified duration of time instance. This function is used in the timedelta class of module DateTime. Syntax: total_seconds() Parameters: This function does not accept any parameter. Return values: This functi 2 min read datetime.tzinfo() in Python datetime.tzinfo() class is an abstract base class in Python that provides the interface for working with time zone information. 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