Convert Hawaii Standard Time to Eastern Standard Time
Instantly convert Hawaii Standard Time (HST) to Eastern Standard Time (EST) with our free online calculator.
Hawaii Standard Time
07:20:48 PM
Tue, Jun 23 (HST)
Eastern Standard Time
12:20:48 AM
Wed, Jun 24 (EST)
Convert a Specific Time
24-Hour Comparison
| HST | EST |
|---|---|
| 12:00 AM | 5:00 AM |
| 1:00 AM | 6:00 AM |
| 2:00 AM | 7:00 AM |
| 3:00 AM | 8:00 AM |
| 4:00 AM | 9:00 AM |
| 5:00 AM | 10:00 AM |
| 6:00 AM | 11:00 AM |
| 7:00 AM | 12:00 PM |
| 8:00 AM | 1:00 PM |
| 9:00 AM | 2:00 PM |
| 10:00 AM | 3:00 PM |
| 11:00 AM | 4:00 PM |
| 12:00 PM | 5:00 PM |
| 1:00 PM | 6:00 PM |
| 2:00 PM | 7:00 PM |
| 3:00 PM | 8:00 PM |
| 4:00 PM | 9:00 PM |
| 5:00 PM | 10:00 PM |
| 6:00 PM | 11:00 PM |
| 7:00 PM | 12:00 AM(+1d) |
| 8:00 PM | 1:00 AM(+1d) |
| 9:00 PM | 2:00 AM(+1d) |
| 10:00 PM | 3:00 AM(+1d) |
| 11:00 PM | 4:00 AM(+1d) |
How to Convert Hawaii Standard Time to Eastern Standard Time
Formula
To convert Hawaii Standard Time (HST) to Eastern Standard Time (EST): Convert HST to EST
About Hawaii Standard Time (HST)
Hawaii Standard Time (HST, IANA: Pacific/Honolulu) is the time zone for the State of Hawaii and the Aleutian Islands of Alaska west of 169.5°W. HST is UTC-10:00 year-round and does not observe Daylight Saving Time per Hawaii Revised Statutes §1-31 (Hawaii opted out of the Uniform Time Act of 1966). When the US mainland switches to Daylight Saving Time in March, the offset from Hawaii to the West Coast (Pacific Time) becomes 3 hours instead of the standard 2 hours. Honolulu sees solar noon at approximately 12:30 PM HST in summer. HST is the same offset as Cook Island Time (CKT) and Tahiti Time (TAHT) in French Polynesia, allowing easy mental conversion across the central Pacific. Time-sensitive activities affected by HST include Pacific tsunami warning system coordination per NOAA NTWC, US military operations from Joint Base Pearl Harbor-Hickam, and the Mauna Kea astronomical observatories' nightly observing schedules.
About Eastern Standard Time (EST)
Eastern Standard Time (EST, IANA: America/New_York, America/Toronto) is the time zone for the US Eastern Seaboard and Canadian eastern provinces, set at UTC-5:00. EST is the most economically and politically significant US time zone, serving the NYC-Washington DC-Boston-Atlanta-Miami corridor of ~150 million people across the entire US Eastern region (New York, Pennsylvania, Massachusetts, Connecticut, Rhode Island, Vermont, New Hampshire, Maine, New Jersey, Delaware, Maryland, Virginia, West Virginia, North Carolina, South Carolina, Georgia, Florida except panhandle, Ohio, Kentucky eastern, Tennessee eastern, Indiana most, Michigan most), eastern Canada (Quebec, Ontario), and the Caribbean (Bahamas, Cuba, Jamaica, Haiti, Panama since 1908). EST observes DST per Energy Policy Act 2005 (switching to EDT = UTC-4:00 from March to November). NYSE official market hours 09:30-16:00 EST/EDT, Wall Street financial reporting, US Federal Government Washington DC working hours, and US Capitol legislative sessions all reference EST/EDT. The historical 'Big Three' US TV-network prime-time was 8-11 PM EST.