Работа со временем и датами

Для работы со временем и датами нужно импортировать пакет datetime.

time - функции, соответствующие функциям языка С. clock time и the processor run time, перевод времени в строку по формату и разбор строки по формату.
datetime - более высокоуровневый интерфейс работы с датами и временем и их комбинированными значениями (дата + время). Поддерживаются арифметические операции, сравнение и конфигурация таймзоны.
calendar - формативанное представление недель, месяцев и лет. Тут вычисляем день недели по дате и тп.

time

Таблица преобразования типов:

From \ To	timestamp	time tuple	string
timestamp	-	gmtime (UTC) localtime (local time)	-
time tuple	calendar.timegm (UTC) mktime (local time)	-	strftime
string	-	strptime	-

Directive	Meaning
%a	Locale’s abbreviated weekday name.
%A	Locale’s full weekday name.
%b	Locale’s abbreviated month name.
%B	Locale’s full month name.
%c	Locale’s appropriate date and time representation.
%d	Day of the month as a decimal number [01,31].
%H	Hour (24-hour clock) as a decimal number [00,23].
%I	Hour (12-hour clock) as a decimal number [01,12].
%j	Day of the year as a decimal number [001,366].
%m	Month as a decimal number [01,12].
%M	Minute as a decimal number [00,59].
%p	Locale’s equivalent of either AM or PM.
%S	Second as a decimal number [00,61].
%U	Week number of the year (Sunday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Sunday are considered to be in week 0.
%w	Weekday as a decimal number [0(Sunday),6].
%W	Week number of the year (Monday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Monday are considered to be in week 0.
%x	Locale’s appropriate date representation.
%X	Locale’s appropriate time representation.
%y	Year without century as a decimal number [00,99].
%Y	Year with century as a decimal number.
%z	Time zone offset indicating a positive or negative time difference from UTC/GMT of the form +HHMM or -HHMM, where H represents decimal hour digits and M represents decimal minute digits [-23:59, +23:59].
%Z	Time zone name (no characters if no time zone exists).
%%	A literal '%' character.