This script is written based on the list of U.S. federal holidays I found in Wikipedia – Wikipedia – U.S. Federal holidays. Some of the dates, such as New Year, are straight forward, as the date and month are fixed. While others require some effort, take for instance Thanksgiving, which is on the fourth Thursday of November OR Memorial day – last Monday of May.
The script is written in bash, and tested in 32 and 64 bit Ubuntu box. It will exit with an error message if you try to get the holidays for the year 2038 or above. This is a know issue with UNIX dates on 32 bit Operating Systems – UNIX: Year 2038 problem
Sample output
daniel@dnetbook:~$ /usr/local/bin/federalholidays.sh Usage: federalholidays.sh Year Eg. federalholidays.sh 2014 daniel@linubuvma:~$ ./federalholidays.sh 1500 New Year's Day: Monday, January 01, 1500 Martin Luther King, Jr. Day: Monday, January 15, 1500 Washington's Birthday: Monday, February 19, 1500 Memorial Day: Monday, May 28, 1500 Independence Day: Wednesday, July 04, 1500 Labor Day: Monday, September 03, 1500 Columbus Day: Monday, October 08, 1500 Veteran's Day: Sunday, November 11, 1500 Thanksgiving: Thursday, November 22, 1500 Christmas Day: Tuesday, December 25, 1500 daniel@linubuvma:~$ ./federalholidays.sh 2014 New Year's Day: Wednesday, January 01, 2014 Martin Luther King, Jr. Day: Monday, January 20, 2014 Washington's Birthday: Monday, February 17, 2014 Memorial Day: Monday, May 26, 2014 Independence Day: Friday, July 04, 2014 Labor Day: Monday, September 01, 2014 Columbus Day: Monday, October 13, 2014 Veteran's Day: Tuesday, November 11, 2014 Thanksgiving: Thursday, November 27, 2014 Christmas Day: Thursday, December 25, 2014 daniel@linubuvma:~$ ./federalholidays.sh 2500 New Year's Day: Friday, January 01, 2500 Martin Luther King, Jr. Day: Monday, January 18, 2500 Washington's Birthday: Monday, February 15, 2500 Memorial Day: Monday, May 31, 2500 Independence Day: Sunday, July 04, 2500 Labor Day: Monday, September 06, 2500 Columbus Day: Monday, October 11, 2500 Veteran's Day: Thursday, November 11, 2500 Thanksgiving: Thursday, November 25, 2500 Christmas Day: Saturday, December 25, 2500
Here is the whole script, feel free to modify it or report any problem –
#!/bin/bash
ARCH=$(arch)
ARGC=$#
function Usage
{
echo "Usage: $(basename $0) Year"
echo "Eg. $(basename $0) 2014"
exit 1
}
# we will need the year as argument in YYYY format
[[ $ARGC -ne 1 ]] && Usage
myyear="$1"
dformat='+%A, %B %d, %Y'
[[ "$myyear" -ge 2038 ]] && [[ "$ARCH" = "i686" ]] && echo 'Year 2038 problem : http://en.wikipedia.org/wiki/Year_2038_problem ' && exit 1
#We will ignore any year below 1902
[[ "$myyear" -lt 1902 ]] && [[ "$ARCH" = "i686" ]] && exit 1
##Function to get the nth day week of the month, for instance, Third Monday of March.
function nth_xday_of_month
{
my_nth=$1
my_xday=$2
my_month=$3
my_year=$4
case "$my_nth" in
1) mydate=$(echo {01..07})
;;
2) mydate=$(echo {08..14})
;;
3) mydate=$(seq 15 21)
;;
4) mydate=$(seq 22 28)
;;
5) mydate=$(seq 29 31)
;;
*) echo "Echo wrong day of the week"
exit 1
;;
esac
for x in $mydate; do
nthday=$(date '+%u' -d "${my_year}${my_month}${x}")
if [ "$nthday" -eq "$my_xday" ]; then
date "${dformat}" -d "${my_year}${my_month}${x}"
fi
done
}
##Memorial day - Last Monday of May.
for x in {31..01}; do y=$(date '+%u' -d "${myyear}05${x}"); if [ "$y" -eq 1 ]; then memday="${x}" ; break; fi ; done
echo "New Year's Day: " $(date "${dformat}" -d "${myyear}0101")
echo "Martin Luther King, Jr. Day: " $(nth_xday_of_month 3 1 01 ${myyear})
echo "Washington's Birthday: " $(nth_xday_of_month 3 1 02 ${myyear})
echo "Memorial Day: " $(date "${dformat}" -d "${myyear}05${memday}")
echo "Independence Day: " $(date "${dformat}" -d "${myyear}0704")
echo "Labor Day: " $(nth_xday_of_month 1 1 09 ${myyear})
echo "Columbus Day: " $(nth_xday_of_month 2 1 10 ${myyear})
echo "Veteran's Day: " $(date "${dformat}" -d "${myyear}1111")
echo "Thanksgiving: " $(nth_xday_of_month 4 4 11 ${myyear})
echo "Christmas Day: " $(date "${dformat}" -d "${myyear}1225")
: <<'federal_holidays_comment'
http://en.wikipedia.org/wiki/Federal_holidays_in_the_United_States
Jan 1 - New Year's Day - 1st day of the year
Third Monday of January - Martin Luther King, Jr. Day
Third Monday of February - Washington's Birthday
Last Monday of May - Memorial Day.
July 4 - Independence Day.
First Monday of September - Labor Day.
Second Monday of October - Columbus Day.
November 11 - Veteran's Day.
Fourth Thursday of November - Thanksgiving
December 25 - Christmas Day
federal_holidays_comment
