Find time zones for addresses or coordinates via API and spreadsheets
Send Geocodio an address, ZIP code, city, or lat/long pair and we'll return the time zone name, UTC offset, DST observance, and abbreviation. Works for one address or millions, via spreadsheet upload or API. And unlike most geocoding providers, we don't prohibit fleet management or asset tracking — so if your vehicles are crisscrossing time zones, you're in the right place.
Geocodio is built for bulk geocoding and data matching. Have addresses or latitude/longitude coordinates and need to add the time zones? This guide will show you how to add them in bulk using Geocodio.
Identify the Addresses, Cities, or Coordinates You Want to Add Time Zones To
Geocodio supports converting the following types of location data into time zones:
Street addresses (Street + City + State + ZIP)
Cities (City + State)
ZIP Codes
States
Latitude/Longitude Pairs
Upload a Spreadsheet of Addresses or Coordinates and Add Time Zones
If your location data is in a spreadsheet, you can upload it here and select "Time Zones" in Step 3 of the upload process. You can download a sample output here.
Use our API to Convert Addresses or Coordinates to Time Zones
Alternatively, you can integrate our API into your application and add time zone information. You can see more in our technical documentation, including a sample output.
(Can I use Geocodio's API to get time zone data even if it's for fleet tracking/asset management?)
Unlike most geocoding providers, we allow fleet management and asset tracking (most geocoders prohibit that use case). See more about the restrictions of other geocoding providers here.
Use the Time Zone Data for Addresses or Coordinates
The data we return for time zones includes all of the following below. Simply grab this data from the completed spreadsheet or the API results and you're good to go.
Why Fleet Management & Asset Tracking Teams Need Time Zone Data
What does time zone data solve for a fleet?
Three things, mostly: making sure timestamps from your devices reflect the actual local time of the vehicle (not your server's), keeping shift and service reports honest across regions, and giving customers ETAs that match the clock on their wall. Without it, a vehicle reporting at 23:00 UTC could be logged on the wrong calendar day, which gets messy fast at scale.
Most telematics platforms collect GPS coordinates and a UTC timestamp from every device, every few seconds. That's the easy part. The hard part is presenting that data to a customer in Denver in a way that makes sense without making them do mental math. Geocodio's timezone append takes a coordinate pair and returns the time zone name (like America/Denver), UTC offset, DST observance, and abbreviation. This means your application can show local times without you maintaining a time zone database yourself.
Common Time Zone Use Cases We See
Heavy equipment and telematics: Caterpillar dealers, construction fleets, and pipeline operators converting raw UTC packets into local-time utilization reports
Connected vehicles and rental cars: fleet telematics platforms managing rentals across regions and adjusting trip start/end times to local clocks
IoT asset tracking: devices reporting from anywhere a truck or trailer ends up, with billions of reverse geocodes a month plus time zone appends
Field service and last-mile: service window calculations, route optimization, and on-time arrival metrics that need to respect the customer's local time
Shift and compliance reporting: driver hours, ELD logs, and operational KPIs that have to land on the right calendar day
Time zones are an additional data append, which means they count as an extra lookup per coordinate, but there’s no need to separately request them. Send the coordinates you're already reverse geocoding, add timezone to your fields, and the data comes back in the same response. No second API call, no separate vendor.
Built for Fleets That Cross Time Zones
Vehicles, equipment, and field crews don't stay in one time zone. Here's how telematics, logistics, and asset tracking teams use Geocodio to keep timestamps honest.
Make sense of UTC timestamps from the field
Send us a lat/long and a UTC timestamp from your devices, and get the local time zone back. No more wondering whether that 11pm data packet on the East Coast counts as today or tomorrow.
Show service windows in the customer's time zone, not yours
If your plumbers or landscapers are running late in Phoenix, your dispatcher in Atlanta needs to know it's their 2pm, not yours. Geocodio handles the time zone math so your ETAs stay accurate.
Stop arguing with your dashboards about what "today" means
When your fleet spans Maryland, Alaska, and California, every report needs the right local time stamped on it. We append time zone data to every coordinate so daily, weekly, and shift reports line up.
We use Geocodio to standardize addresses and then append timezones and county codes for a client of ours, a large oil and gas distributor. We've worked with geographic data for several decades, and have used a lot of different geocoding products. I prefer Geocodio because it's powerful and easy to use with a simple billing structure.
Steve Adams, Principal, Information Technology Management
Related Resources
Fleet Management & Asset Tracking
Thousands of fleet management, asset tracking, and logistics companies use Geocodio.
Sample Output
See the data we return and download a sample spreadsheet with time zones added.
API Documentation: Timezones
See how to integrate our API to add time zone data to your application.
Unlimited Geocoding
No rate limiting and process up to 200,000 lookups per hour for a flat fixed rate.
Coordinates to Addresses
How to turn latitude/longitude coordinates to addresses with Geocodio.
First 2,500 lookups free per day. No credit card required.