I have a time span between two epoch times (in seconds). I want a function that returns the epoch times (in seconds) of all midnights within that time span.
In pseudocode I would want something like this:
const epoch_start = 1600000;
const epoch_end = 16040000;
function getMidnights(start, end){
// do your magic
}
console.log(getMidnights(epoch_start, epoch_end));
I would expect the return of that function to look like this: [1600020, 1600400] (these are just example values).
What would be the most efficient way to do this?
My ideas were: get unique list of days within range and return their midnight.
You might step by day rounding by day:
const epoch_start = 1600000000;
const epoch_end = 1600400000;
const day = 86400;
function getMidnights(start, end){
midnites = [];
while (start < end) {
midnites.push((start/day + .5|0)*day);
start += day;
}
return midnites;
}
console.log(getMidnights(epoch_start, epoch_end))
console.log('* check it *')
console.log(getMidnights(epoch_start, epoch_end).map(t => new Date(t*1e3)));