7.12. Datetime Cheatsheet

7.12.1. Python

from datetime import datetime, date, time, timedelta, timezone
datetime(year, month, day, hour, minute, second, microsecond, tzinfo) - Create a datetime object
date(year, month, day) - Create a date object
time(hour, minute, second, microsecond) - Create a time object
date.today() - Get the current date
datetime.now() - Get the current date and time
datetime.now(timezone.utc) - Get the current date and time in UTC
datetime.datetime.strptime('1969-07-21 02:56:15', '%Y-%m-%d %H:%M:%S') - Parse a string into a datetime object
dt.isoformat() - Get the current date and time in ISO 8601 format
dt.strftime(dt, '%Y-%m-%d %H:%M:%S') - Format a datetime object as a string

7.12.2. Directives

%Y - Year with century as a decimal number, example: '1969'
%m - Month as a zero-padded decimal number, example: '07'
%d - Day of the month as a zero-padded decimal number, example: '21'
%H - Hour (24-hour clock) as a zero-padded decimal number, example: '02'
%M - Minute as a zero-padded decimal number, example: '56'
%S - Second as a zero-padded decimal number, example: '15'
%f - Microsecond as a decimal number, zero-padded on the left, example: '000000'
%Z - Time zone name (empty string if the object is naive), example: 'UTC'
%z - UTC offset in the form +HHMM or -HHMM (empty string if the object is naive), example: '+0000'
%A - Weekday as locale's full name, example: 'Monday'
%a - Weekday as locale's abbreviated name, example: 'Mon'
%B - Month as locale's full name, example: 'July'
%b - Month as locale's abbreviated name, example: 'Jul'
%I - Hour (12-hour clock) as a zero-padded decimal number, example: '02'
%p - Locale's equivalent of either AM or PM, example: 'AM'
%y - Year without century as a zero-padded decimal number
%G - ISO 8601 year with century representing the year that contains the greater part of the ISO week (%V)
%m - Month as a zero-padded decimal number
%B - Month as locale's full name
%b - Month as locale's abbreviated name
%d - Day of the month as a zero-padded decimal number
%a - Weekday as locale's abbreviated name
%A - Weekday as locale's full name
%u - ISO 8601 weekday as a decimal number where 1 is Monday
%w - Weekday as a decimal number, where 0 is Sunday and 6 is Saturday
%j - Day of the year as a zero-padded decimal number
%H - Hour (24-hour clock) as a zero-padded decimal number
%I - Hour (12-hour clock) as a zero-padded decimal number
%p - Locale's equivalent of either AM or PM
%Z - Time zone name (empty string if the object is naive)
%z - UTC offset in the form +HHMM or -HHMM (empty string if the object is naive)
%:z - UTC offset in the form ±HH:MM[:SS[.ffffff]] (empty string if the object is naive).
%U - Week number of the year (Sunday as the first day of the week) as a zero padded decimal number. All days in a new year preceding the first Sunday are considered to be in week 0
%W - Week number of the year (Monday as the first day of the week) as a decimal number. All days in a new year preceding the first Monday are considered to be in week 0
%V - ISO 8601 week as a decimal number with Monday as the first day of the week. Week 01 is the week containing Jan 4
%c - Locale's appropriate date and time representation
%x - Locale's appropriate date representation
%X - Locale's appropriate time representation
%% - A literal % character

7.12.3. Timezones

timezone.utc - UTC timezone
from zoneinfo import ZoneInfo
ZoneInfo('Africa/Cairo') - Timezone object for Cairo, Egypt
ZoneInfo('Asia/Tokyo') - Timezone object for Tokyo, Japan
ZoneInfo('Australia/Sydney') - Timezone object for Sydney, Australia
ZoneInfo('Europe/Warsaw') - Timezone object for Warsaw, Poland
ZoneInfo('Europe/Paris') - Timezone object for Paris, France
ZoneInfo('Europe/London') - Timezone object for London, England
ZoneInfo('America/New_York') - Timezone object for New York, USA
ZoneInfo('America/Los_Angeles') - Timezone object for Los Angeles, USA
More timezones: https://python3.info/intermediate/datetime/tzdata.html