Fix Javascript Date Woes

#javascript #typescript #webdev

If you've ever worked with dates returned from an API in javascript/typescript, you've probably dealt with the "ugh, why did it convert to UTC then add the timezone". I found this helpful function that will take any Date and apply the Timezone difference while retaining the original time.

For example, without this function if you give the Date class 1/1/2022 12:00AM, people in the EST Timezone will see 12/31/2021 6:00PM EST.

With this function, if you give the Date class if you give 1/1/2022 12:00AM, people in the EST Timezone will see 1/1/2022 12:00AM EST.

Code originally found from StackOverflow

const newDateInCurrentTimezone = (date: Date | string) => {
  const newDate = new Date(date);
  const userTimezoneOffset = newDate.getTimezoneOffset() * 60000;
  return new Date(newDate.getTime() + userTimezoneOffset);
};

export default newDateInCurrentTimezone;

Gist: https://gist.github.com/phil-the-dev/eba6cdbf170822fbdee637087080ce71