Provided by: hdate_1.6.02-1build1_amd64 
NAME
hdate - displays Hebrew date information for a given Gregorian/Julian date
SYNOPSIS
hdate [options] [coordinates [timezone]] [[[dd] mm] yyyy]
hdate [options] [coordinates [timezone]] [ julian_day ]
coordinates: -l [NS]yy[.yyy] -L [EW]xx[.xxx]
-l [NS]yy[:mm[:ss]] -L [EW]xx[:mm[:ss]]
timezone: -z nn[( .nn | :mm )]
DESCRIPTION
hdate translates the specified date to the Hebrew calendar and optionally displays further information
about that Hebrew date, including holidays and astronomical-related times (see section LOCATION, below).
If no arguments are given, it displays information for the current date. If a single numeric argument is
given, it will be interpreted as a year, and hdate will output the requested information for all days of
that year. If two numeric arguments are given, it will be interpreted as mm yyyy, and hdate will output
the requested information for all days of that month.
INPUTTING A HEBREW DATE: If the year provided is greater than 3000, hdate will interpret the given date
as a Hebrew date, and will display information for the corresponding Gregorian date. Hebrew months are
expected to be passed as numbers 1-12 for Tishrei - Elul; Adar I and Adar II are expected to be passed as
months 13 and 14.
INPUTTING A JULIAN DAY: If a single numeric argument is provided, and it is greater than 348021, hdate
will interpret it as the "Julian day number" and will display information for the corresponding Hebrew
date.
OPTIONS
-b --bidi output Hebrew information in Hebrew, but in reverse
--visual sequence.
-c print Shabbat start/end times. Shabbat starts 20 min before sunset, and ends
when three stars are out.
-d --diaspora use diaspora reading and holidays.
-h --holidays print holidays.
-H Print only if it is a holiday.
-i --ical use iCal formatted output.
-j --julian print Julian day number.
-o --omer print Sefirat Ha Omer
-q --quiet-alerts quiet. suppress warning messages
-r --parasha print weekly reading for Shabbat.
-R print only if the weekly reading is read on that Shabbat
-s --sun print sunrise/sunset times.
-S --short-format print using short format.
-t print day times: first light, talit, sunrise, mid day, sunset, first stars,
three stars
-T --table print tabular output. All data for each requested day will be output on a single
comma-delimited line. Most suitable for piping, or export to spreadsheets0TP -l
--latitude [NS]yy[.yyy] decimal degrees, or [NS]yy[:mm[:ss]] degrees, minutes,
seconds. Negative values are South
-L --longitude [EW]xx[.xxx] decimal degrees, or [EW]xx[:mm[:ss]] degrees, minutes, seconds.
Negative values are West
-z --timezone +/-UTC. Notation may be in decimal hours ( hh[.hh] ) or hours, minutes (
hh[:mm] )
--hebrew forces Hebrew to print in Hebrew characters
--yom force Hebrew prefix to Hebrew day of week
--leshabbat insert parasha between day of week and day
--leseder insert parasha between day of week and day
--not-sunset-aware
don't display next day if after sunset
NOTES
LOCATIONS
If you want hdate to display accurate time-of-day information, hdate requires location and time zone
information in order to make astronomical calculations for a given date. If you don't provide ANY such
information, hdate uses your computer's local time zone information as an indicator, and either picks a
city in that time zone, or defaults to the equator at the center of that time zone. If hdate can't even
retrieve time zone information from your computer, it defaults to Tel-Aviv. For other locations, use the
-l -L option pair. For other timezones, use the -z option. Co-ordinates and standard time zones for some
common locations are listed below.
The current defaults include:
Timezone Default city Lattitude Longitude
-5 New York City 40 -74
0 London 51 0
1 Paris 48 2
2 Tel-Aviv 32 34
3 Moscow 55 37
Useful locations and time zones
Jerusalem 31, 35, 2 Buenos Aires 34, -58, -3
Tel Aviv 32, 34, 2 Hong Kong 22, 114, 8
Haifa 32, 34, 2 Los Angeles 34, -118, -8
Beer Sheva 31, 34, 2 Sao Paolo 23, -46, -3
Ashdod 31, 34, 2 Toronto 43, -79 -5
Tiberias 32, 35, 2
Eilat 29, 34, 2
FILES
CONFIG FILE
This folder and file will be automatically created, and includes its own documentation, in-line:
${XDG_CONFIG_HOME}/hcal/hcalrc
If ${XDG_CONFIG_HOME} is undefined:
~/.config/hcal/hcalrc
BUGS
Accuracy The accuracy of the astronomically-derived data will suffer from not accounting for
environmental conditions such as elevation, horizon, temperature and air pressure.
Timezones The timezone support is currenlty primitive and lacks support for daylight savings time
transitions.
Historical
The software does not yet account for the phenomenon and complications of the "Gregorian
transition" from the prior, Julian calendar, which effectively caused an instantaneous 'loss'
of two weeks for all gentiles affected. Countries (eg. Poland, Spain and Italy) began adopting
the Gregorian calendar on 8 Tishrei 5343 (4 October 1582CE), although many did not transition
until the 56th century (1752 CE, eg. UK colonies, Sweden). Russia did not adopt the Gregorian
calendar until 5678 (1918 CE) and Turkey did not until 5687 (December, 1926 CE). Many other
countries made the transition on other dates. Keep in mind that Russia invaded part of Poland,
undoing, for the interim, the Gregorian transition for (only) that part of Poland; Also
important to remember in this regard is that Eretz Ysroel was part of the Turkish Ottoman
empire until the British mandate (5677 (1917CE)). Until all this is accounted for adequately by
this application, refer to ' ncal -p ´ for a basic table of country transitions. However, keep
in mind that European borders underwent many changes during the 426 years in question, so the
accuracy of your data will depend on accurate knowledge of whether any particular date at any
specific location was Julian or Gregorian.
EXAMPLES
1. Create an iCal calendar of the holidays of year 2025.
hdate -Hi 2025
2. Print out the weekly readings and sunset/sunrise times for Eilat, on April 2031.
hdate -sR 4 2031 -l29 -L34 -z2
SEE ALSO
mlterm(1), hcal(1), hebcal(1), date(1), ncal(1), cal(1), remind(1)
AUTHORS
Boruch Baum 2011-2013. Yaacov Zamir 2005-2010.
project page: http://libhdate.sourceforge.net
hcal and hdate are part of the package libhdate , a small C/C++ library for Hebrew dates, holidays, and
reading sequences (parashiot). It uses the source code from Amos Shapir's "hdate" package, as fixed and
patched by Nadav Har'El. The Torah reading sequence tables were contributed by Zvi Har'El.