What Time Zone Is Park Slope In?
Park Slope operates on America/New_York, abbreviated as EST, which is currently UTC-05:00 from Coordinated Universal Time. The IANA Time Zone Database (also known as the tz database or zoneinfo) records this under the identifier America/New_York. That identifier is what your phone, laptop, and every major web service uses when they display a localized time for Park Slope.
The designation America/New_York follows the IANA convention of naming zones after the largest city in that timezone region. This naming is geographic, not political, it reflects where the zone is observed, not which government controls it. The full record for this zone, including historical UTC offsets and past DST rule changes, is publicly available in the Wikipedia list of tz database time zones.
UTC Offset: Park Slope vs. The World
The current UTC offset in Park Slope is UTC-05:00. This means Park Slope time is 05:00 hours behind Coordinated Universal Time. To quickly convert: if it's 12:00 UTC right now, it's 17:49 local time in Park Slope.
Relative to other major cities: Park Slope is 0 hours ahead of New York, and -5 hours behind London (including any DST difference currently in effect). These differences can shift by one hour during DST transitions, which occur on different dates in different regions.
Business Hours in Park Slope
Standard business hours in Park Slope run from 09:00 to 18:00 local time (America/New_York). In UTC, that window is 14:49 to 23:49 UTC. If you're trying to schedule a call with someone in Park Slope:
- From New York: the Park Slope business day runs 09:49 to 18:49 New York time.
- From London: the Park Slope business day runs 14:49 to 23:49 London time.
Use the hour-by-hour conversion table above for the full 24-hour breakdown.
Daylight Saving Time in Park Slope
The DST indicator above shows whether Park Slope currently observes Daylight Saving Time. When DST is active, clocks advance by one hour, shifting the UTC offset by +1 and changing the abbreviation (for example, from EST to EDT in New York). When DST ends, clocks fall back and the offset returns to its standard value.
Not all countries observe DST. Japan, China, India, most of Africa, and several other nations maintain a fixed offset year-round. Whether America/New_York observes DST, and the exact dates of transitions, is governed by the rules stored in the IANA Time Zone Database , the same source your phone uses. The Wikipedia article on Daylight Saving Time provides a global map and country-by-country breakdown of DST observance.
Sunrise and Sunset in Park Slope
Today in Park Slope (40.7°N, 74.0°W), sunrise is approximately 06:30 and sunset is approximately 17:46 local time (America/New_York). These times are calculated using the Spencer equation for solar declination and apply to today's date. Latitude significantly affects day length: cities near the equator see roughly 12 hours of daylight year-round, while high-latitude cities experience dramatic swings, midsummer days can exceed 20 hours near the Arctic Circle, while midwinter days shrink to under 4 hours. At 40.7° latitude, Park Slope's day length varies by several hours between summer and winter solstice.
Best Time to Call Park Slope from Abroad
Standard business hours in Park Slope run 09:00 to 18:00 local time (America/New_York). For international callers, the ideal window is 10:00 to 16:00 Park Slope time : after the morning rush and before the end-of-day slowdown. In UTC, this translates to 15:49 to 21:49 UTC. Avoid calling before 09:00 or after 20:00 Park Slope time, these windows fall outside acceptable business etiquette in most professional settings. If you are calling from New York,Park Slope business hours correspond to 09:49 to 18:49 Eastern time. From London, that same window is 14:49 to 23:49 GMT/BST.
Park Slope Time vs Major World Cities
Right now, Park Slope (UTC-05:00) is offset from major business hubs as follows:
- New York: Park Slope is the same time as New York right now (UTC-05:00).
- London: Park Slope is 5 hours behind London right now (UTC+00:00).
- Dubai: Park Slope is 9 hours behind Dubai right now (UTC+04:00).
- Singapore: Park Slope is 13 hours behind Singapore right now (UTC+08:00).
- Tokyo: Park Slope is 14 hours behind Tokyo right now (UTC+09:00).
- Sydney: Park Slope is 16 hours behind Sydney right now (UTC+11:00).
These differences shift by one hour during DST transitions, which occur on different dates in different regions. Always verify the current offset before scheduling.
Geographic Location of Park Slope
Park Slope sits at 40.6701°N, -73.9860°W. Solar noon, the moment the sun reaches its highest point, occurs at approximately 12:49 local time, when the sun crosses the meridian above Park Slope. The IANA timezone America/New_York groups Park Slope with nearby cities that share the same legal time, even if they sit at slightly different longitudes and therefore experience solar noon at slightly different moments. Zone boundaries are drawn along political borders and transportation corridors, not strict meridian lines.
Park Slope: Size, Population, and Location
Park Slope has a population of approximately 65,047 people, placing it among smaller but notable cities. The city sits at 40°40'N, 73°59'W (decimal: 40.6701°, -73.9860°),40.7 degrees north of the equator.
At 40.7° latitude, Park Slope experiences moderate seasonal variation in day length, expect roughly 9-10 hours of daylight in winter and 14-16 hours in summer. Today, Park Slope sees sunrise at 06:30 and sunset at 17:46 local time. The IANA timezone America/New_York groups Park Slope with nearby cities that share the same legal clock, even if they sit at slightly different longitudes with marginally different solar noon times.
Working Hours Overlap: Park Slope and Key Partners
Park Slope's standard working day (09:00–18:00 local, America/New_York) translates to different hours for common international partners:
- San Francisco (America/Los_Angeles): Park Slope's workday runs 06:49 to 15:49 Pacific time.
- Berlin (Europe/Berlin): Park Slope's workday runs 15:49 to 00:49 Central European time.
Overlap windows, times when both cities are within 09:00–18:00, are the practical window for real-time collaboration. Use the time difference tool on this site to find the shared working window for any pair of cities.