If-Modified-Since

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Header type	Request header
Forbidden request header	no

Ð¡Ð¸Ð½ÑÐ°ÐºÑÐ¸Ñ

If-Modified-Since: <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT

<day-name>: ÐÐµÐ½Ñ Ð½ÐµÐ´ÐµÐ»Ð¸ ("Mon", "Tue", "Wed", "Thu", "Fri", "Sat" Ð¸Ð»Ð¸ "Sun") Ñ ÑÑÑÑÐ¾Ð¼ ÑÐµÐ³Ð¸ÑÑÑÐ°.
<day>: ÐÐµÐ½Ñ (2 ÑÐ¸ÑÑÑ), Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, "04" Ð¸Ð»Ð¸ "23".
<month>: ÐÐ°Ð·Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÑÑÐ° ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec") Ñ ÑÑÑÑÐ¾Ð¼ ÑÐµÐ³Ð¸ÑÑÑÐ°.
<year>: ÐÐ¾Ð´ (4 ÑÐ¸ÑÑÑ), Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, "1990" Ð¸Ð»Ð¸ "2016".
<hour>: Ð§Ð°Ñ (2 ÑÐ¸ÑÑÑ), Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, "09" Ð¸Ð»Ð¸ "23".
<minute>: ÐÐ¸Ð½ÑÑÐ° (2 ÑÐ¸ÑÑÑ), Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, "04" Ð¸Ð»Ð¸ "59".
<second>: Ð¡ÐµÐºÑÐ½Ð´Ð° (2 ÑÐ¸ÑÑÑ), Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, "04" or "59".
GMT: Ð¡ÑÐµÐ´Ð½ÐµÐµ Ð²ÑÐµÐ¼Ñ Ð¿Ð¾ ÐÑÐ¸Ð½Ð²Ð¸ÑÑ (Greenwich Mean Time). HTTP Ð´Ð°ÑÑ Ð²ÑÐµÐ³Ð´Ð° Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÐºÐ°Ðº GMT Ð²ÑÐµÐ¼Ñ Ð¸ Ð½Ð¸ÐºÐ¾Ð³Ð´Ð° ÐºÐ°Ðº Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾Ðµ.

If-Modified-Since: Wed, 21 Oct 2015 07:28:00 GMT

Ð¡Ð¿ÐµÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ	ÐÐ°Ð·Ð²Ð°Ð½Ð¸Ðµ
RFC 7232, ÑÐ°Ð·Ð´ÐµÐ» 3.3: If-Modified-Since	Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests

This page was last modified on 9 Ð°Ð¿Ñ. 2026 Ð³. by MDN contributors.