Questions tagged [time-date]
is for time of day, handling date and time formats, interfacing with the operating system for date and time values, converting time zones, and calculating date and time arithmetic.
71
questions
21
votes
2answers
923 views
Is there a mode to automatically update copyright years in files?
Usually around this time of year people start to realize that their copyright year is out of date in their files. This is particularly annoying if you like to put the copyright in every source file. I ...
9
votes
2answers
836 views
Parsing formatted time string (inverse of format-time-string)
The format-time-string function takes a time argument like '(21761 64499 350937 0) and a format string like "%y-%m-%d %a %H:%M" and returns something like "15-03-12 Thu 16:49".
What is the inverse ...
7
votes
2answers
785 views
Counting the number of days that have passed since a certain date
I have an org-mode document in which I wish to keep track of the number of days that have passed since a certain date. Is there a built in function for this, or will I be forced to write a custom ...
7
votes
3answers
3k views
in org-mode, how to insert timestamp with today's date?
In a Lisp function, how do I instruct org to automatically insert a timestamp with today's date?
I found the function org-insert-time-stamp, but I don't know how to provide an argument for it that ...
7
votes
1answer
944 views
Specify timezone in Org date format
When I write something like this: <2015-07-05 Sun 20:00 GMT+0>, and then try to edit it by pressing C-c ., Org removes the GMT+0 part. So, I think it's in a wrong format.
Note: I don't want to ...
7
votes
1answer
224 views
Increment days / months / dates, etc. within buffer
In a text document, while editing, I often need to increment/ decrement calendar data. So, Friday will need to become Monday, December will need to become March, etc.
Or 28 Apr after adding 5 will ...
6
votes
2answers
683 views
Elisp function to see a date for next Wednesday
Admitting up front that I am not capable of much Lisp, I have found ways to produce the current date or a number of seconds from a date, but I am looking for a simple equivalent to shell command like ...
6
votes
2answers
1k views
How can I change Org-mode time format for one buffer?
In general all timestamps in Org-mode appears as [YYYY-MM-DD Day]. I have one file (buffer) where I would like the format to be different. Either just [YYYY-MM-DD] or [YYYY-MM]. How do I tell Org-mode ...
6
votes
2answers
954 views
Multiple Scheduled Timestamps for One Task
Suppose I want to be reminded to water my plants on Monday, Wednesday, and Friday, AND on any of the following days, if for some reason I miss the scheduled days.
I originally tried the following:
**...
4
votes
1answer
381 views
Change date from active to inactive
I want to change an active date <2017-12-10 17:04> to inactive date [2017-12-10 17:04] and vice versa.
How do I do that?
4
votes
2answers
517 views
Convert Unix time to Org-mode timestamp
How can I convert a Unix time to an Org-mode local timestamp?
For example (convert 1523473110) should return <2018-04-11 Wed 15:58:30>.
I found org-timestamp--to-internal-time, but that uses "...
4
votes
1answer
3k views
How to display time in seconds in the mode line?
By default display-time-mode shows the time only in minutes. How I can display time in seconds? Something like 18:34:45".
4
votes
2answers
470 views
Get time in AM/PM format
(format-time-string "%p") is empty in my Emacs. How I can format date in AM/PM format?
That answer second part of Show time in different time zones
UPDATE
(length (format-time-string "%p")) ; is 0
...
4
votes
1answer
362 views
Display months/days or timestamps in another language than English
Setup:
GUI version GNU Emacs 25.0.50.1 (x86_64-w64-mingw32) of 2015-07-25 on KAEL compiled from EmacsW64.
Windows 7 x64 Dutch version.
Situation:
When I'm evaluating the following snippet:
(...
3
votes
2answers
669 views
Converting plain text to dates
Is it possible to convert plain text dates to Org dates automatically? I have entries in the format:
16 February 2015
which I would like to convert to Org dates: <2015-02-16 Mon>
3
votes
2answers
113 views
Convert between ISO week and a normal date
How can you convert between ISO year-week-day and an elisp date that can be sent to, e.g., format-time-string? I do not want to go via a string representation.
I found the following old question on ...
3
votes
2answers
730 views
Show time in different time zones
I take a lot of different MOOC and each class declare own deadline relative to some time zone.
Are there any Emacs mode that show date/time in buffer for several selected time zones in same time?
I ...
3
votes
1answer
61 views
Column of programmatically updated dates in org-mode
I'm trying to make a table in org-mode, the first column of which should be the Monday of each week starting with a date I specify. So, for example, if I specify Dec 14th, I would get a column with ...
3
votes
0answers
124 views
How to get the (localized) day of the week lowercased in time-stamp-format?
The %:a allows to get the full weekday in the Time-stamp. My system-time-locale is fr_FR.UTF-8. I am using the Time-stamp in a Markdown file, inside a pandoc title block, which I export to html, so I ...
2
votes
1answer
139 views
Is it possible to change and freeze the current date-time in Emacs?
I'm a heavy Emacs Org-mode user and VERY dependent on the date functionality. I frequently enter events, receipts, etc. using capture templates after they've already occurred. My current solution is ...
2
votes
1answer
729 views
How to insert inactive [timestamp] via function?
C-u C-c ! generates a time stamp like [2015-05-04 Mon 17:13]
I would like to assign a shortcut (e.g F1) to this action.
So far I have:
(defun my/timenow (&optional arg)
(interactive)
(let (...
2
votes
1answer
98 views
How to add a time and a time interval in calc-mode?
How do I use calc to add a time interval to a moment in time (i.e., a date, or a time)?
For instance, say I want to know what the time and day will be 8,000 minutes into the future?
I know that t N ...
2
votes
1answer
86 views
How to retrieve the date under the cursor in emacs calendar as the format day.month.year like 15.07.2018
Is there a way to retrieve the date under the cursor in emacs calendar as the format day.month.year like 05.07.2018 as a clipboard content?
2
votes
1answer
310 views
org-mode timestamp repeater interval manipulation
What are (if any) the lisp functions to read and write the repeater interval part of the org-mode timestamps? (The ones at the end of the timestamp string, which are optional, e.g. +1w or +6d in <...
2
votes
1answer
801 views
in yasnippet, how to insert variable date with fixed time of day?
I want a yasnippet to insert an org-mode date and time.
The date should be today's date, but the time should be fixed.
So far my snippet correctly inserts today's date, but not the time:
# -*- ...
2
votes
1answer
545 views
Compare file modification time stamps
Background
I am using Emacsclient to open files in a Emacs server. The server configuration depends on the content of a JSON configuration file. A Perl script can read the config file and write a ...
2
votes
1answer
288 views
Is there a view that can show time entered per day?
Basically I am after a method to find missing times.
Currently I use this code to view times per task.
#+BEGIN: clocktable :link t :maxlevel 10 :block week :scope file
But I can not view if i am ...
2
votes
2answers
861 views
Show sum of efforts for a day in Org-Agenda day title
I would like to show sum of efforts for all tasks for a day in Org-Agenda day title. E.g. for a week agenda there would be 7 sums for each of the day, in their respective titles.
I think this could ...
2
votes
2answers
34 views
How to set schedule and deadline for entires being inserted via org-capture template file?
I'm trying to leverage the power of org capture templates. There are a few tasks I know I will be scheduling on particular dates of the month.
Setting their schedule and deadline in the capture ...
2
votes
1answer
109 views
How do I interconvert Calc's HMS forms and seconds?
Is there a built-in way to convert/toggle between GNU Emacs Calc's HMS forms and seconds? I'd also like to easily be able to add numbers as seconds and/or minutes to an existing HMS form.
2
votes
1answer
65 views
Query org agenda build time?
Q: how can I get the last time I built the org agenda buffer?
I've set an idle timer to rebuild my org agenda buffer every x minutes. It works fine, but it's inefficient to rebuild if the agenda ...
2
votes
1answer
97 views
meta-data related to the current buffer
How can I retrieve the date/time of the creation of the current file (file-date-time-of-creation) on my system?
The same question can arise for the size.
A related question was asked here. This is a ...
2
votes
1answer
184 views
Invalid date: 01-Jan-2055
I recently downloaded Emacs 24.4 and sometimes I see an "invalid date" error in my buffer.
When I am in eww, often I try to click (RET) a link and I get:
error in process sentinel: Invalid date: 01-...
2
votes
0answers
46 views
Twilight times in addition to sunrise/sunset?
The sunrise-sunset function from solar.el computes sunrise and sunset. I would also like to have a function that computes the end/beginning of
civil twilight (center of sun 6 deg below horizon)
...
2
votes
0answers
46 views
Org-mode adding statistic cookie to date-tree lines in capture
In this video(timestamped to relevant section), I see this guy's org file in a date-tree with the [/] statistic cookie next to each YYYY-MM-DD headline.
https://youtu.be/-2RXhPV_zgc?t=12m51s
I'd ...
1
vote
3answers
83 views
How can I convert a list of integers to a string?
Let's say I have a list of integers, representing year, month, day for a date:
(2017 8 21)
and I want to format the list in one function call, as in
(format "%04d-%02d-%02d" 2017 8 21)
Is there an ...
1
vote
1answer
572 views
Convert org-time-stamp
I need a function that can determine whether an org-time-stamp in a table equals the current date.
Example:
#+NAME: test
| date | breakfast |
|------------------+-----------|
| <2015-...
1
vote
2answers
281 views
The time of the last change of the current buffer
Can Emacs determine the time of the last change (or the last edit) done to the current buffer?
The buffer may has been saved or not.
1
vote
2answers
580 views
Yasnippet invoked org-time-stamp function inserts double timestamp
I created a yasnippet template to quickly timestamp a note I'd like to make in org-mode. The body of the yasnippet file reads
$0
:PROPERTIES:
:CREATED: `(org-insert-time-stamp nil t t)`
:END:
...
1
vote
1answer
109 views
Convert a timestamp to local time
I have a timestamp string "2011-01-23T16:18:46-08:00" and I want to convert it to my local time zone.
(format-time-string
"%Y-%m-%dT%H:%M:%S%z"
(decode-time (parse-iso8601-time-string "...
1
vote
2answers
159 views
How do I pick a date in my new major mode?
I want to insert a date in the current buffer.
I know the function calendar-cursor-to-date that when invoked gives back the date at which the cursor is.
But how do I get that info back into my ...
1
vote
1answer
37 views
Customising the increments in an org-mode timestamp
When I create an appointment in org-agenda I make use of timestamps. The item is created with today's date and time and I then place my cursor on the date and time respectively and use S-up or S-down ...
1
vote
1answer
267 views
In elisp, how can I calculate the number of days remaining until a given date?
I feel like elisp (or org-mode) must have something like (days-until '2018-01-01) which would calculate the days between today and 2018-01-01. How would I go about implementing that?
1
vote
1answer
1k views
Current time timestamp in org-capture-templates
In org-mode org-capture templates, what is the way to insert current time timestamp?
I've tried %U like so:
(setq
org-capture-templates
(quote
(
("k" "Capture an item and schedule it for ...
1
vote
1answer
516 views
How to display date in Julian in the mode line?
The following setting display the date in Gregorian calendar in the mode line.
(setq display-time-day-and-date t)
(display-time)
My question is how to change the above settings for date to be shown ...
1
vote
2answers
21 views
How to interpret buffer-display-time values?
I am trying to use buffer-display-time var, in order to come with a solution for this question.
Having a look at the documentation, I get this:
buffer-display-time is a variable defined in ‘buffer.c’...
1
vote
1answer
128 views
Determining the string formats for datetime-timezone
When loading a .log file I get the message
Warning (emacs): Failed to determine system timezone; consider customizing ‘datetime-timezone’ variable
Going to the customization menu, the options are ...
1
vote
1answer
68 views
What is the reason for this erratic behavior in `time-subtract`?
I am attempting to calculate some time differences in org time strings using time-subtract.
(time-subtract (org-parse-time-string "2018-04-16 Mon 14:00")
(org-parse-time-string "2018-...
1
vote
2answers
77 views
unable to restart or update a timer
I have simple timer which makes sure a function is executed for every 10 seconds.
(setq interval 10)
(defun run-every-ten-seconds ()
(do-something))
(defun start-timer ()
(setq timer
(run-...
1
vote
0answers
21 views
Sorting org files in Emacs Dired on the basis of the org time stamp in the file itself
Is there a way of sorting org files (.org) in Emacs Dired on the basis of the org time stamp in the file itself. With every org file I create, I insert an org time stamp near the top of the file. This ...
