@@ -789,7 +791,7 @@ href="https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanes
calendar with 24-hour days. These divergences range from
relatively minor, such as Japanese bars giving times like 24:30 for the
wee hours of the morning, to more-significant differences such as the
+ href="https://theworld.org/stories/2015/01/30/ethiopian-time">the
east African practice of starting the day at dawn, renumbering
the Western 06:00 to be 12:00. These practices are largely outside
the scope of the tz code and data, which
@@ -1126,7 +1128,7 @@ However POSIX.1-2024, like earlier POSIX editions, has some limitations:
the name of a file from which time-related information is read.
The file’s format is TZif,
a timezone information format that contains binary data; see
- Internet
+ Internet
RFC 9636.
The daylight saving time rules to be used for a
particular timezone are encoded in the
@@ -1438,7 +1440,7 @@ but they indicate the sort of problems that we would run into if we
extended the time zone database further into the past.
An excellent resource in this area is Edward M. Reingold
and Nachum Dershowitz, Calendrical
+href="https://www.cambridge.org/fr/universitypress/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition">Calendrical
Calculations: The Ultimate Edition, Cambridge University Press (2018).
Other information and sources are given in the file "calendars"
in the tz distribution.
@@ -1450,13 +1452,13 @@ They sometimes disagree.
Time and time zones off Earth
The European Space Agency is considering
+href="https://www.esa.int/Applications/Satellite_navigation/Telling_time_on_the_Moon">considering
the establishment of a reference timescale for the Moon, which has
days roughly equivalent to 29.5 Earth days, and where relativistic
effects cause clocks to tick slightly faster than on Earth.
Also, NASA
has been ordered
+href="https://bidenwhitehouse.archives.gov/wp-content/uploads/2024/04/Celestial-Time-Standardization-Policy.pdf">ordered
to consider the establishment of Coordinated Lunar Time (LTC).
It is not yet known whether the US and European efforts will result in
multiple timescales on the Moon.
@@ -1576,7 +1578,7 @@ Sources for time on other planets: