No guidance on date formatting for "--expiration-date" flag

[inflatador]

Hello AWS Docs team,

Just filing an issue, as there is no guidance on date formatting for the "aws ssm --expiration-date" cli action.
Looks like it uses epoch timestamps. Would you mind adding that to your documentation?

Thanks for your time!

[CalebAWS]

Hello,

The reference below might help.

https://docs.aws.amazon.com/en_us/systems-manager/latest/userguide/systems-manager-datetime-strings.html

[mark-amzn]

@inflatador - Also, as luck would have it, we added info about the --expiration-date format yesterday: https://docs.aws.amazon.com/en_us/systems-manager/latest/userguide/sysman-managed-instance-activation.html#create-managed-instance-activation-commandline

[mark-amzn]

Also clarified now at https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_CreateActivation.html#systemsmanager-CreateActivation-request-ExpirationDate.