Combined the lunar script to default clock module. It looks great. Thank you again for your great help. :)

I find out line 41 coding is wrong, the correct value is “MS_in_day = 10006060*24”. I have tested and work fine now. Thanks.

Orginal:
let MS_in_day =

20*60*60*1000+8*60*1000  //24*60*60*1000;

New:

let MS_in_day = 1000*60*60*24;

the fetch will still get today’s time

of course. I have still no idea

I have tested again. But it is still not up to date while past 0:00 :(

I am using windows brower to connect MM server. Then, changing windows clock to 23:59.

you have to set the clock BEFORE opening the MM page… it doesn’t reset when the clock changes…

the code only sets up ONCE when loaded, so the clock has to be set first…

learn to use the developers window, ctrl-shift-i , sources tab,

you can step thru the code

ohhhhhh

and I gave it set to trigger BEFORE midnight… see the code, comment out and restore the 24×60… so you could test without having to reset the clock

Thank you for your all effort. My dream is coming true soon.

I have tested. No Luck. Don’t know is it coding program or my testing method wrong.

I am using windows brower to connect MM server. Then, changing windows clock to 23:59. After 00:00, there is no any changing of Lunar date.

git clone https://github.com/sdetweil/MMM-Lunar.git

then u can git init to wipe out my repo

the BIG cause was that your start routine
called
this.updateLunarCal();
not
this.updateLunarDate();

start also doesn’t need to call fetchIt as the updateLunarDate does that after setting up the timer

I cleaned up the rest…

you can test by setting the ‘end time’ in ms…
hour and minute and then see it fire the setTimeout handler
see comment in the code

Sorry, it still not working. I would like to share the module as below. Would you please help to fix it? Many thanks.

https://www.dropbox.com/scl/fi/qxcbjuibaaaz7ojwr7ucs/MMM-Lunar.zip?rlkey=4zeyqxpp4ibchq2znb5mwpvjr&dl=0

@kent79 error, yeh, sorry, forgot to change the self?.fetchIt() to use the right self pointer… fixed now

Would you like to tell me which line need to update since I don’t know how to do? I have tested the above code, no syntax error, but no working while on 00:00. Thanks

It seems OK now. I will test it on tonight and will share it to all later. Thank you so much.

	 updateLunarCal: function() {

		let MS_in_day = 24*60*60*1000;
		let now = moment();
		let MS_til_midnight = MS_in_day - (now.diff(now.clone().startOf('day'), 'milliseconds'));
			
		// start a one time timer to end of day
		setTimeout((selft) =>{
			
			//in one time timer(at  00:00:00), start interval for next start of day
			setInterval((selfi)=>{
				// fetch data, once per day at 00:00:00
				selfi.fetchIt(selfi) // use 'this' pointer passed to the interval routine
			},MS_in_day,
			  selft)  // pass 'this' pointer passed to us

			// fetch on the 1st start of day, one time
			selft.fecthIt(selft)

		}, MS_til_midnight,
		   this );  // pass 'this' to the timer routine

		// fetch data now, 1st time
		this.fetchIt(this);
	},

Thank you so much for your reply. I got error while running above function. There may be some syntax error. But I can’t fix it. Please help me again. Thanks

fetchIt: function(self){
		var url1 = "https://abc ....";		
		
		fetch(url1)
			.then((resp) => resp.json())
			.then(function(data) {
				// Here you get the data to modify as you please
				self.lunar = data.LunarDate;							
				self.updateDom();
			})

			.catch(function(error) {
				// If there is any error you will catch them here
			});	
},

updateLunarCal: function() {

		let MS_in_day = 24*60*60*1000;
		let now = moment();
		let MS_til_midnight = MS_in_day - (now.diff(now.clone().startOf('day'), 'milliseconds')

			
		// start a one time timer to end of day
		setTimeout((selft) =>{
			
			//in one time timer(at  00:00:00), start interval for next start of day
			setInterval((selfi)=>{
				// fetch data, once per day at 00:00:00
				self.fetchIt(selfi) // use 'this' pointer passed to the interval routine
			},MS_in_day,
			  selft)  // pass 'this' pointer passed to us

			// fetch on the 1st start of day, one time
			self.fecthIt(selft)

		}, MS_til_midnight,
		   this );  // pass 'this' to the timer routine

		// fetch data now, 1st time
		this.fetchIt(this);
}		

I have revised as above code. Is it achieve my goal?

May be I explain it clearly.

I am developing a lunar calender module. As my above coding, it will connect to json server to get the lunar information ervery 1 second.

I would like to change it to connect server once on Everyday 00:00.

Since I am a beginner of coding, I don’t know how to do edit it. Please teach me. Thanks

you have to calculate the ms til 0:0:0

you can use the moment library (yes I know other folks its not the new library)

// Your moment
var now = moment();   // now

// Your moment at midnight
var Midnight = now.clone().startOf('day');  // 00:00:00 today earlier

// Difference in milliseconds
var milliseconds_passed_already = now.diff(Midnight, 'milliseconds'); // since 00:00:00
then subtract  
var milliseconds_til_midnight_tonight = (24*60*60*1000)-milliseconds_passed_already