Install hdate by entering the following commands in the terminal:
sudo apt update sudo apt install hdate
Description:
Provides the hcal and hdate binaries that help use Hebrew dates
LibHdate is a small C,C++ library for Hebrew dates, holidays, and reading sequence (parasha). It is using the source code from Amos Shapir's "hdate" package fixed and patched by Nadav Har'El. The Torah reading sequence is from tables by Zvi Har'El. . This package provides the hdate command-line utility.
Homepage: http://libhdate.sourceforge.net/
Version: 1.6.02-1build1
Section: universe/utils