How can I calculate the time (minutes and seconds) to a daily recurring point of time in a schedule *new*: and update it as a countdown

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#1

For my classroom tools I look for a tool to calculate the rest of the current lesson. I would like enter these basic timetable as indexes. Do you have good ideas or examples?

#2

So a countdown timer to Wednesday afternoon maths?

#3

A countdown timer to end of 1st, 2nd, 3rd… lesson/block every day math

#4

Check TiddlyTools for TW5 v5.3.0 — Small Tools for Big Ideas!™
you can set one or multiple alarms to run daily and to trigger on a condition that you can set using filters

#5

Hi @EricShulman 's collection is great, but I do not need alarms - I need a countdown

#6

Maybe https://tiddlytools.com/##TiddlyTools/Time/CountDown

#7

Thank you @twMat, but I want

…and this automatically scheduled every day

#8

In the last thread on time there was the proposition to use the Unix time which seems to be possible natively since 5.3. How can I convert a date to Unix time, I could not find the documentation yet

#9

Given a date in 17-digit system format (YYYY0MM0DD0hh0mm0ss0XXX using UTC), you can convert it to “unixtime” using format:date[TIMESTAMP] and convert it back to a formatted date string using format:timestamp[...] where “…” specifies a TWCore date format.

See the 4th example here: https://tiddlywiki.com/#format%20Operator%20(Examples)

Get the date and time exactly 24 hours (86,400,000 milliseconds) from now:
[<now [UTC]YYYY0MM0DD0hh0mm0ss0XXX>format:date[TIMESTAMP]add[86400000]format:timestamp[DDth mmm YYYY 0hh:0mm:0ss]]
1 Like
#10

Thank you @EricShulman for the help:
Given times in the form of 0hh0mm in a schedule in a dictionary tiddler “Testschedule” this code works:


\define timeregexp() (\d{2})(\d{2})
\function unixseconds()
[<now YYYY0MM0DD0hh0mm0ss>] [[000]] +[join[]format:date[TIMESTAMP]]
\end


<$list filter="[[Testschedule]indexes[]sort[title]compare:number:gt<now 0hh0mm>limit[1]]" >

*{{{ [{!!title}search-replace::regexp<timeregexp>,[$1:$2]] - [[Testschedule]getindex{!!title}]}}}
*{{{ [<now YYYY0MM0DD>] [{!!title}] [[00000]] +[join[]format:date[TIMESTAMP]] +[subtract<unixseconds>divide[1000]] }}}
</$list>

Here is a set with Testschedule to play around with;Schedule filter set.json (926 Bytes)

What is the smartest way to update this so that the countdown works?

#11

More elegant using functions:

\function nexttime() [{$:/config/classroom!!schedule}indexes[]sort[title]compare:number:gt<now 0hh0mm>limit[1]]
\function timedisplay() [<nexttime>search-replace::regexp<timeregexp>,[$1:$2]]
\function scheduleinfo() [{$:/config/classroom!!schedule}getindex<nexttime>]
\function to-hours() [<seconds>divide[3600]floor[]] [<seconds>remainder[3600]divide[60]floor[]] [<seconds>remainder[60]] +[join[:]]
\function seconds()  [<now YYYY0MM0DD>] [<nexttime>] [[00000]] +[join[]format:date[TIMESTAMP]] +[subtract<unixseconds>divide[1000]] 
\define timeregexp() (\d{2})(\d{2})
\function unixseconds()
[<now YYYY0MM0DD0hh0mm0ss>] [[000]] +[join[]format:date[TIMESTAMP]]
\end

<<timedisplay>> <<scheduleinfo>>

<<nexttime>>

<<seconds>>

<<to-hours>>