As silly as it is, I don't use it strictly because the 'T' between the date and the time making them harder to read. "YYYY-MM-DD hh:mm:ss.nnn" and a separate ti

As silly as it is, I don't use it strictly because the 'T' between the date and the time making them harder to read. "YYYY-MM-DD hh:mm:ss.nnn" and a separate timezone field is the format for me. Another problem with ISO is the specs aren't freely available, so people will generally guess or refer to old versions, drafts, or RFCs (like RFC 3339)