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What is the best way to clear time of a browser native date object using Moment.js so that in the current timezone of my browser it's today midnight.

Sebastien Tardif
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    Maybe [`startOf('day')`](http://momentjs.com/docs/#/manipulating/start-of/) is what you are looking for. – VincenzoC Dec 21 '16 at 20:45
  • @VincenzoC - Please provide answers in answer, not in comments. – Matt Johnson-Pint Dec 21 '16 at 22:21
  • Sebastien - Keep in mind that not every local day *has* a midnight. If there is a DST "spring-forward" transition at 00:00, then the day starts at 01:00. This happens in Brazil, and several other places around the world. `startOf('day')` will reflect that. – Matt Johnson-Pint Dec 21 '16 at 22:22
  • @MattJohnson you are right, but I was not sure that I understood what the OP was asking and just tried to give a quick link. I think that a good answer has to include consideration like what you added in the second comment (I was not aware of the _spring-forward_ "issue" with midnight) – VincenzoC Dec 21 '16 at 22:32

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The closest thing to what you asked is as follows:

var d = new Date();                // your browser native date object
var m = moment(d).startOf('day');  // move to the start of the day in the local time zone
d = m.toDate();                    // convert back to a native date object

However, if this is the only thing you want to do, you don't need Moment. Just do:

d = d.setHours(0, 0, 0, 0);

Also, keep in mind that not every local day has a midnight. If there is a DST "spring-forward" transition at 00:00, then the day starts at 01:00. This happens in Brazil, and several other places around the world. In this case, Moment's startOf('day') function will ensure the result is 1:00, however the setHours approach may set 1:00, or may set 23:00 on the prior day, depending on browser implementation.

Matt Johnson-Pint
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