Supported date time formats

Clock uses date/time formatting provided by Qt, but with few exceptions/extensions:

• h (and hh) means 12-hour format in any case, regardless of AM/PM symbol presence
• J - day of year, 0-365 (366), no leading zeroes are supported
• W - week number, 0-53, no leading zero, WW - with leading zero (e.g. 08)
• : has special meaning, use it to specify separator (aka "dot" which should be animated)
• any of special characters (including :) can be escaped with \ (backslash) and then be used as regular characters
• anything in single quotes (') is interpreted as is, but escape sequences (e.g. \n) still be interpreted
• use \\ ("escaped backslash") to get \ and \' ("escaped single quote") to get '

The rest is delegated to Qt, see Qt documentation for supported date and time formats. Day and month names are localized, some other locale-specific date/time formatting is also preserved.