[3] [CITE@en[RFC 1459 - Internet Relay Chat Protocol]], [TIME[2021-04-11T07:15:29.000Z]], [TIME[2021-04-13T03:29:22.449Z]] <https://tools.ietf.org/html/rfc1459#section-4.3.4>

[1] [CITE@en[RFC 1459 - Internet Relay Chat Protocol]], [TIME[2021-04-11T07:15:29.000Z]], [TIME[2021-04-13T03:28:41.759Z]] <https://tools.ietf.org/html/rfc1459#page-52>

[2] [CITE@en[RFC 1459 - Internet Relay Chat Protocol]], [TIME[2021-04-11T07:15:29.000Z]], [TIME[2021-04-13T03:28:59.632Z]] <https://tools.ietf.org/html/rfc1459#page-54>

[5] [CITE@ja[RFC から読めない IRC]], [TIME[2021-04-13T03:36:24.000Z]] <https://yoshino.tripod.com/73th/data/irccode.htm#ctcp_application_time>

[6] [CITE@en[RFC 2812 - Internet Relay Chat: Client Protocol]], [TIME[2021-04-11T07:44:32.000Z]], [TIME[2021-04-13T03:49:06.510Z]] <https://tools.ietf.org/html/rfc2812#section-3.4.6>

[7] [CITE@en[RFC 2812 - Internet Relay Chat: Client Protocol]], [TIME[2021-04-11T07:44:32.000Z]], [TIME[2021-04-13T03:51:47.216Z]] <https://tools.ietf.org/html/rfc2812#page-51>

[4] [CITE@en[`server-time` Extension - IRCv3]], [[IRCv3 Working Group]], [TIME[2021-04-13T03:32:18.000Z]] <https://ircv3.net/specs/extensions/server-time>