javascript - How to keep time zone constant for a given date using TypeScript

Question

I want to convert below date in EST Time zone. Currently it is picking up my system time zone which is PST resulting in change of date. Instead of changing the date I want to keep the time zone constant for the below date. I have gone through many forums but not getting the exact solution or close to it.

describe("Day Entry1", () => {
  it("should be created with an entryDate1", () => {
    const dayEntry = new DayEntry(new Date("2021-01-01T00:00:00.000-05:00")); // Can i keep dayEntry constant to EST?  
    expect(dayEntry.entryDate).toEqual("2021-01-01"); 
  });
    

//Its failing as expected is coming as 2020-12-31

question from:https://stackoverflow.com/questions/65905311/how-to-keep-time-zone-constant-for-a-given-date-using-typescript

Answer 1

Waitting for answers