gistfile1.txt

$ perl6 -e '.say for DateTime.^lookup("new").candidates».signature'
(DateTime $: \y, \mo, \d, \h, \mi, \s, :$timezone = 0, :&formatter, *%_)
(DateTime $: :$year!, :$month = 1, :$day = 1, :$hour = 0, :$minute = 0, :$second = 0, :$timezone = 0, :&formatter, *%_)
(DateTime $: Date:D :$date!, *%_)
(DateTime $: Instant:D $i, :$timezone = 0, *%_)
(DateTime $: Numeric:D $time is copy, :$timezone = 0, :&formatter, *%_)
(DateTime $: Str:D $datetime, :$timezone is copy, :&formatter, *%_)
(Dateish $: *%_)