$creationDate

$creationDate will return the creation date of anything what was created within Discord.

Usage

$creationDate[resolver;format?]

Field	Type	Description	Required
resolver	number	User Id, message Id, channel Id, guild Id or role Id of who or what you want to get the creation date to be returned of.	true
format?	string	The format of the creation date (listed below).	false

Format	Output
ms	1522158545409
date	3/27/2018, 1:49:05 PM
time	4 years, 9 months, 6 days, 2 hours, 17 minutes, 33 seconds
time-full	4 years, 9 months, 6 days, 2 hours, 17 minutes, 33 seconds
time-humanize	4y 9mon 6d 2h 24m 30s

This will return your account create date:

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client.command({
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    name: "creationDate",
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    code: `
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  Your account was created: $creationDate[$authorID;date]
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  `
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});