Provided by: dateutils_0.4.2-1_amd64 bug


       dateround - Round DATE/TIME to the next occurrence of RNDSPEC.


       dateround [OPTION]...  [DATE/TIME] RNDSPEC...


       Round DATE/TIME to the next occurrence of RNDSPEC.

       If DATE/TIME is omitted a stream of date/times is read from stdin.

       DATE/TIME can also be one of the following specials
         - `now'           interpreted as the current (UTC) time stamp
         - `time'          the time part of the current (UTC) time stamp
         - `today'         the current date (according to UTC)
         - `tomo[rrow]'    tomorrow's date (according to UTC)
         - `y[ester]day'   yesterday's date (according to UTC)

       RNDSPECs can be month names (Jan, Feb, ...), weekday names (Sun, Mon, ...), or days.  If a
       month name the next date/time relative to DATE/TIME is returned whose month  part  matches
       the  value  given,  so  e.`g. dround 2012-01-01 Feb' will return 2012-02-01.  If a weekday
       name is given, the next date/time after DATE/TIME whose weekday part  matches  the  values
       given is returned.  If a day, the next date/time after DATE/TIME whose day part matches is
       returned, so `dround 2012-01-15 1' will return 2012-02-01.

       RNDSPECs can also be multiples of the day dividing units, e.g 1h  rounds  to  the  nearest
       full hour, 30m to the nearest half hour, and 10s to the next 10s mark.

       To  round  to the previous occurrence of a RNDSPEC any argument can be prefixed with a `-'
       to denote that.   E.g.  `dround  2012-02-14  -1'  will  return  2012-02-01.   And  `dround
       2012-02-11 -- -Sep' will return 2011-09-11.

       Multiple RNDSPECs are evaluated left to right.

       Note  that  rounding  isn't  commutative,  e.g.       2012-03-01 Sat Sep -> 2012-09-03 vs.
            2012-03-01 Sep Sat -> 2012-09-01

       Note that non-numeric strings prefixed with a `-' conflict with the command  line  options
       and a separating `--' has to be used.

       Recognized OPTIONs:

       -h, --help
              Print help and exit

       -V, --version
              Print version and exit

       -q, --quiet
              Suppress  message  about  date/time  and  duration  parser errors and fix-ups.  The
              default is to print a warning or the fixed up value and return error code 2.

       -f, --format=STRING
              Output format.  This can either be a specifier string (similar to strftime()'s FMT)
              or the name of a calendar.

       -i, --input-format=STRING...
              Input  format,  can  be  used multiple times.  Each date/time will be passed to the
              input format parsers in the order they are  given,  if  a  date/time  can  be  read
              successfully with a given input format specifier string, that value will be used.

       -b, --base=DT
              For underspecified input use DT as a fallback to fill in missing fields.  Also used
              for ambiguous format specifiers to position their range on the absolute time  line.
              Must  be  a  date/time  in  ISO8601  format.   If  omitted  defaults to the current

       -e, --backslash-escapes
              Enable interpretation of backslash escapes in the output and input format specifier

       -S, --sed-mode
              Copy  parts  from  the  input before and after a matching date/time.  Note that all
              occurrences of date/times within a line will be processed.

              Format results according to LOCALE, this would only affect month and weekday names.

              Interpret dates on stdin or the command line as coming from the locale LOCALE, this
              would  only  affect  month  and weekday names as input formats have to be specified

              Interpret dates on stdin or the command line as coming from the time zone ZONE.

       -z, --zone=ZONE
              Convert dates printed on stdout to time zone ZONE, default: UTC.

       -n, --next
              Always round to a different date or time.


       Format specs in dateutils are similar to posix' strftime().

       However, due to a broader range of supported calendars  dateutils  must  employ  different

       Date specs:
         %a  The abbreviated weekday name
         %A  The full weekday name
         %_a The weekday name shortened to a single character (MTWRFAS)
         %b  The abbreviated month name
         %B  The full month name
         %_b The month name shortened to a single character (FGHJKMNQUVXZ)
         %c  The count of the weekday within the month (range 00 to 05)
         %C  The count of the weekday within the year (range 00 to 53)
         %d  The day of the month, 2 digits (range 00 to 31)
         %D  The day of the year, 3 digits (range 000 to 366)
         %F  Equivalent to %Y-%m-%d (ymd's canonical format)
         %g  ISO week date year without the century (range 00 to 99)
         %G  ISO week date year including the century
         %j  Equivalent to %D
         %m  The month in the current calendar (range 00 to 19)
         %Q  The quarter of the year (range Q1 to Q4)
         %q  The number of the quarter (range 01 to 04)
         %s  The number of seconds since the Epoch.
         %u  The weekday as number (range 01 to 07, Sunday being 07)
         %U  The week count,  day of week is Sun (range 00 to 53)
         %V  The ISO week count,  day of week is Mon (range 01 to 53)
         %w  The weekday as number (range 00 to 06, Sunday being 00)
         %W  The week count,  day of week is Mon (range 00 to 53)
         %y  The year without a century (range 00 to 99)
         %Y  The year including the century
         %_y The year shortened to a single digit
         %Z  The zone offset in hours and minutes (HH:MM) with
             a preceding sign (+ for offsets east of UTC, - for offsets
             west of UTC)

         %Od The day as roman numerals
         %Om The month as roman numerals
         %Oy The two digit year as roman numerals
         %OY The year including the century as roman numerals

         %rs In time systems whose Epoch is different from the unix Epoch, this
             selects the number of seconds since then.
         %rY In calendars with years that don't coincide with the Gregorian
             years, this selects the calendar's year.

         %dth  The day of the month as an ordinal number, 1st, 2nd, 3rd, etc.
         %mth  The month of the year as an ordinal number, 1st, 2nd, 3rd, etc.

         %db The business day of the month (since last month's ultimo)
         %dB Number of business days until this month's ultimo

       Time specs:
         %H  The hour of the day using a 24h clock, 2 digits (range 00 to 23)
         %I  The hour of the day using a 12h clock, 2 digits (range 01 to 12)
         %M  The minute (range 00 to 59)
         %N  The nanoseconds (range 000000000 to 999999999)
         %p  The string AM or PM, noon is PM and midnight is AM.
         %P  Like %p but in lowercase
         %S  The  (range 00 to 60, 60 is for leap seconds)
         %T  Equivalent to %H:%M:%S

       General specs:
         %n  A newline character
         %t  A tab character
         %%  A literal % character

         %O  Modifier to turn decimal numbers into Roman numerals
         %r  Modifier to turn units into real units
         %0  Modifier to turn on zero prefixes
         %SPC  Modifier to turn on space prefixes
         %-  Modifier to turn off prefixes altogether
         th  Suffix, read and print ordinal numbers
         b   Suffix, treat days as business days

       By design dates before 1601-01-01 are not supported.

       For  conformity  here  is  a  list  of calendar designators and their corresponding format
         ymd     %Y-%m-%d
         ymcw    %Y-%m-%c-%w
         ywd     %rY-W%V-%u
         bizda   %Y-%m-%db
         lilian     n/a
         ldn        n/a
         julian     n/a
         jdn        n/a
         matlab     n/a
         mdn        n/a

       These designators can be used as output format string, moreover,  @code{lilian}/@code{ldn}
       and @code{julian}/@code{jdn} can also be used as input format string.


       Some  tools  ("dadd",  "dseq")  need  durations  as  their input.  Durations are generally
       incompatible with input formats as specified by "-i|--input-format" and  (at  the  moment)
       the input syntax is fixed.

       The general format is "+-Nunit" where "+" or "-" is the sign, "N" a number, and "unit" the
       unit as discussed below.

         s  seconds
         m  minutes
         h  hours
         rs real-life seconds, as in including leap  transitions

         d  days
         b  business days
         mo months
         y  years


         $ dround 2012-03-01 2

         $ dround -n 2012-03-01 1

         $ dround 17:05:00 5m
         $ dround 17:04:00 /5m

         $ dround -n 17:04:00 4m
         $ dround -n 17:04:00 /1m


       Written by Sebastian Freundt <>


       Report bugs to:


       The full documentation for dateround is maintained as a Texinfo manual.  If the  info  and
       dateround programs are properly installed at your site, the command

              info (dateutils)dateround

       should give you access to the complete manual.