Time difference between San Mateo and Chicago
Chicago is 14 hours behind San Mateo.
Local time in both cities
Philippines
United StatesChicago is 14 hours behind San Mateo.
still the previous day
Time zones
| San Mateo | Asia/Manila · UTC+08:00 |
|---|---|
| Chicago | America/Chicago · UTC-06:00 |
San Mateo does not observe daylight saving and stays on UTC+08:00 all year.
Chicago is currently on standard time (UTC-06:00). Next change: 2027-03-14 03:00.
Hour-by-hour conversion
Calculated for 2026-11-06 local time in San Mateo. The two places start and end daylight saving on different dates, so another day can give a different result.
| San Mateo (source) | Chicago (target) |
|---|---|
| 00:00 | 10:00 prev day |
| 01:00 | 11:00 prev day |
| 02:00 | 12:00 prev day |
| 03:00 | 13:00 prev day |
| 04:00 | 14:00 prev day |
| 05:00 | 15:00 prev day |
| 06:00 | 16:00 prev day |
| 07:00 | 17:00 prev day |
| 08:00 | 18:00 prev day |
| 09:00 | 19:00 prev day |
| 10:00 | 20:00 prev day |
| 11:00 | 21:00 prev day |
| 12:00 | 22:00 prev day |
| 13:00 | 23:00 prev day |
| 14:00 | 00:00 |
| 15:00 | 01:00 |
| 16:00 | 02:00 |
| 17:00 | 03:00 |
| 18:00 | 04:00 |
| 19:00 | 05:00 |
| 20:00 | 06:00 |
| 21:00 | 07:00 |
| 22:00 | 08:00 |
| 23:00 | 09:00 |
Other common differences from San Mateo
FAQ
- How many hours apart are San Mateo and Chicago right now?
- For San Mateo and Chicago, the current difference is -14:00, calculated from today’s time-zone rules. The page shows the local date in both cities on a 24-hour clock. Daylight-saving changes can alter the gap. Use specific-date mode for another day and check for a date rollover rather than carrying today’s offset forward. Verify the intended local date on each side before scheduling, especially when the conversion falls near midnight or the destination observes a different seasonal clock change.
- Does the time difference between San Mateo and Chicago stay constant all year?
- The gap between San Mateo and Chicago does not necessarily stay constant all year. If the two cities change daylight-saving time on different dates, their difference can vary; months 1 and 7 may show different results. Choose the intended date in specific-date mode and check the converted local date. Do not assume that 1 fixed offset applies for every day of the year, particularly when arranging future meetings or reviewing dates near seasonal clock changes.
- How does the hourly table mark date changes and daylight-saving gaps from San Mateo to Chicago?
- The hourly table for San Mateo and Chicago lists corresponding local times for each hour and marks the same instant and any date rollover. It covers 24 hourly slots across 2 cities; a local time skipped by a daylight-saving jump is identified instead of being invented. Check the date and the time zones on both sides when arranging a meeting. Shifting the displayed hour alone can give the wrong local date when the conversion crosses midnight.