The datetime2 package provides commands for formatting dates, times and time zones and redefines \today to use the same formatting style. In addition to \today, you can also use \DTMcurrenttime (current time) or \DTMnow (current date and time). Dates and times can be saved for later use. The accompanying datetime2-calc package can be used to convert date-times to UTC+00:00. Language and regional support is provided by independently maintained and installed modules. The datetime2-calc package uses the pgfcalendar package (part of the PGF/TikZ bundle). This package replaces datetime.sty, which is now obsolete.