Copyright © 2012 Stéphan Kochen <firstname.lastname@example.org>
Copyright © 2012 Alexey Sokolov <email@example.com>
Copyright © 2012 Kyle Fuller <firstname.lastname@example.org>
Copyright © 2016 James Wheare <email@example.com>
Unlimited redistribution and modification of this document is allowed provided that the above copyright notice and this permission notice remains intact.
Clients indicate support for the extension by requesting a capability server-time as per the IRC Client Capabilities Extension.
CAP REQ :server-time
When enabled, the server-time extension enables optional
time message tag which can be used in messages from server to client.
The value of the tag MUST have the following syntax:
<value> ::= YYYY-MM-DDThh:mm:ss.sssZ
It represents a calendar date and time of day in UTC using extended format, as specified by ISO 8601:2004(E) 4.3.2. Precision of the time is one millisecond.
time is presented in a message received from a server, a client SHOULD treat the message as having occurred at the given time instead of its current time.
Servers MAY include the timestamp in messages when they see fit but MUST NOT do so before acknowledging the client capability using
Clients MAY choose to simplify parsing by accepting timestamps at any point in the connection (e.g. even before
Servers offering this capability for all messages SHOULD also offer the
echo-message capability to allow clients to keep a consistent chronology of events.
This section is non-normative
Angel messaged Wiz at Wed, 19 Oct 2011 16:40:51.620 UTC
@time=2011-10-19T16:40:51.620Z :Angelfirstname.lastname@example.org PRIVMSG Wiz :Hello
John joined #chan during the leap second of June 2012 (notice the :60)
@time=2012-06-30T23:59:60.419Z :Johnemail@example.com JOIN #chan
Previous versions of the specification didn’t recommend
Software supporting server-time: BitlBee, Charybdis, InspIRCd, Oragono, Planio Team Chat, txircd, UnrealIRCd, AdiIRC, Colloquy, HexChat, IceChat, Konversation, KVIrc, mIRC, Mozilla Thunderbird, Quassel, Textual, WeeChat, Swirc, Glirc, IRCCloud, Kiwi IRC, The Lounge, PIRC.pl web client, CoreIRC, Palaver, Quasseldroid, IRCCloud (as Server), pounce (as Server), pounce (as Client), ZNC (as Server), ZNC (as Client), KiwiBNC (as Server), KiwiBNC (as Client), Limnoria, Sopel (ex Willie), Moon Moon, BitBot, Communi, girc, irc-framework, Kitteh IRC Client Library, Rust irc, Warren, ChatSharp