# Time calculation from sun down time to end time to show seconds countdown for turn off lights and show time on dashboard **URL:** \ **Category:** Questions & Help\ **Tags:** app, dashboard, homey-pro, local-time\ **Created:** [November 28, 2023, 7:43pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134 "2023-11-28T19:43:19Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Kevin\_Ponsen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kevin_ponsen/32/92414_2.png) [@Kevin\_Ponsen](https://community.homey.app/u/Kevin_Ponsen)\ **Post date:** [November 28, 2023, 7:43pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/1 "2023-11-28T19:43:19Z")
i have read many option on forum but i cant figure it out how or what to do to get it to work i want to calculate time from start sundown to self set end time 22:30 used variables are text / (Tijd Week) (set to 22:30) text / (Tijd Weekend) (set to 00:30) number / (Tuin Timer) (set in seconds) text / (Tijd Nu) **IF** (Sundown in 0 min) **then** Set (Tijd Nu) with current time **IF** weekday **then** (Tijd Week) - (Tijd Nu) = result in minutes (\*60) = seconds **else** (Tijd Weekend) - (Tijd Nu) = result in minutes (\*60) = seconds **then** Set Result seconds to (Timer 1) for example sundown 18:30 (time)=18:30 end time 22:30 (endtime) remaining time 22:30 - 18.30 = 4 hour \* 3600 = 14400 sec (timer set 14400) end result is then something like this ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/b/4/b4b5a4ac2a54cdc1817ec2a91afa467215a0aff5.png) can someone please explain me how to make something like this or know what i can use for this to ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [November 29, 2023, 2:53am UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/2 "2023-11-29T02:53:24Z")
Better Logic Library can help here > [@\[APP\]\[Pro\] Better Logic Library - For Users](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876/100): > > BLL expressions within any text (variable) I am having more and more fun with BLL. The below was not obvious to me so I share here the power of the BLL card “Set variable to text”. [image] This means you can add one or more texts and BLL expressions into any text variable, pass the variable to a central flow where you process it with a single BLL card. This saves (me) several formatting cards in various flows. > [@\[APP\]\[Pro\] Better Logic Library - For Users](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876/28): > > Well, you can kind off, but not in the easy ‘formatting’ way: because i didn’t find a all-around solutions independend of locale and timezone. date('DATETIME', null, 'en') You will get a tag, you can use the last number if it’s like this. But if you get this, you will probably get the same result as me: So, the complete solution would be: new Date().setHours(18-Number.parseInt(\_.last(date('DATETIME', null, 'en'))),0,0,0) - Date.now() \< 15\*60\*1000; (this is true when less the… > [@The Flow Exchange(r) - Exchange Your Flows with Others!](https://community.homey.app/t/the-flow-exchange-r-exchange-your-flows-with-others/68981/72): > > Time Calculator With the re-invented Better Logic Library app, we can calculate with time a bit easier without Homeyscript. Apps used: [Better Logic Library](https://homey.app/a/net.i-dev.betterlogic)Other things people need to do to get it working correct? Any questions can be asked in this topic: [https://community.homey.app/t/app-pro-better-logic-library-for-users/71876](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876) TEF: [tef:FLOWS:"H4sIAAAAAAACA7VayXIbyRH9FUbHHGYiVHLtC472ZQ7jk3wjGYxasiiEsd… ---
**Author:** ![Kevin\_Ponsen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kevin_ponsen/32/92414_2.png) [@Kevin\_Ponsen](https://community.homey.app/u/Kevin_Ponsen)\ **Post date:** [November 29, 2023, 4:07pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/3 "2023-11-29T16:07:48Z")
thanks for you reply after 2 hours of trying i found a solution with excuteable code ect My flow ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/b/b/bb8ffa0c3cee69bb5e2a7d6863df5f0a03f8cfb2.png) First (voer // get the current time date and time) ```auto // Get the current date and time var currentDate = new Date(); var currentTimeInSeconds = Math.round((currentDate.getHours() * 3600) + currentDate.getMinutes() * 60) + (currentDate.getSeconds()); // Set the result in a Homey variable of type number setTagValue("Tijd Nu", {type: "number", title: "Tijd Nu"}, currentTimeInSeconds); // Log the result (optional) console.log("Current Time in Seconds: " + currentTimeInSeconds); ``` Second (Voer // Define the time in hours and minutes) ```auto // Define the time in hours and minutes var weekhours = 22; var weekminutes = 30; var weekendhours = 00; var weekendminutes = 30; // Calculate the total seconds var totalSecondsweek = (weekhours * 3600) + (weekminutes * 60); var totalSecondsweekend = (weekendhours * 3600) + (weekendminutes * 60); setTagValue("Tijd Week", {type: "number", title: "Tijd Week"}, totalSecondsweek); setTagValue("Tijd Weekend", {type: "number", title: "Tijd Weekend"}, totalSecondsweekend); // Log the result (optional) console.log("22:30 in seconds: " + totalSecondsweek); console.log("00:30 in seconds: " + totalSecondsweekend); ``` ALERT this is the normal time (no winter time for dutch) if you need this you have to add 3600 sec somewhere you want i hope someone can use it good luck all result ![dashboard](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/7/f7e78057239f24fe3135c3f1d82b3b92eec5dd62.gif) ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [November 29, 2023, 9:50pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/4 "2023-11-29T21:50:39Z")
> [@Kevin\_Ponsen](#): > > ```auto > // Set the result in a Homey variable of type number > setTagValue("Tijd Nu", {type: "number", title: "Tijd Nu"}, currentTimeInSeconds); > > ``` One hint, writing/updating homeyscript variables is simplified a lot: ```auto await tag('My String', 'abcdef'); await tag('My Number', 123); await tag('My Boolean', true); ``` See the ‘example-tag.js’ script ---
**Author:** ![Kevin\_Ponsen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kevin_ponsen/32/92414_2.png) [@Kevin\_Ponsen](https://community.homey.app/u/Kevin_Ponsen)\ **Post date:** [December 4, 2023, 5:24pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/5 "2023-12-04T17:24:58Z")
thanks i am no programmer so im glad it works so i dont go editing it before i f\*\*\* it up 😃 if it work it works i dont touch it anymore 😜 ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [December 4, 2023, 6:41pm UTC](https://community.homey.app/t/time-calculation-from-sun-down-time-to-end-time-to-show-seconds-countdown-for-turn-off-lights-and-show-time-on-dashboard/96134/6 "2023-12-04T18:41:44Z")
That’s a good practice!