IP Address Tracker is a paid service that will get you the IP geographical location information of your user. Just simply call the API for a pacific IP address and you will get the following information about your user: country, state, city, zip code, longitude, latitude, and timezone.  

With Zip-info API, you can get information like city, state, timezone, dst for a passed zip code. It provides you with the local time, UTC offset, daylight savings and time zone details.

The Swatch Internet Time API provides you with the ability to quickly synchronize time across the globe using REST. It's completely free. It supports timezones, GMT offsets, and full dates with year/month/day - all that to give you the most flexible platform to build your services on.  

TimeZoneDB provides a simple RESTful interface API and returns structured XML or JSON responses. You need to register a free API key to start using these services. This API is free for personal and non-commercial usage. There are no limits on how many queries you can make, but there is a rate limit where you can only send a request to the server once per second. Additional queries will get blocked.  

Use the Time API Services of timeanddate.com to look up the current local time, do time zone conversions, obtain time zone information, and find out when Daylight Saving Time (DST) begins and ends in countries around the world. It also allows you to look up locations by geographic coordinates.  

The Timezone API allows you to request a time zone and get the details about the time zone in return. Timezone API can predicate the time zone of any location depending on IP addresses. All data is received as JSON  

With the free time zone API of Amdoren, you can easily integrate local time into your personal and commercial website and application. It provides you with the local time, UTC offset, daylight savings and time zone details. It is available in JSON format and easily accessible through a simple API request over a secure HTTPS connection.  

The World Weather Online's Time Zone REST API method retrieves current local time and UTC offset hour and minute for a specified location. You can specify the location by any of the methods like city, town, IP address, postcode, zipcode, latitude & longitude.  

BigData Cloud's Timezone API returns detailed active time zone information estimated by IPv4 IP address geolocation, including daylight saving adjustments if applicable. It will also return the current local time by default, or if supplied with a UTC reference time, it will automatically perform a timezone conversion for you. Powered by patent-pending Next Generation IP Geolocation Technology  

With Real-Time Map API, you can easily embed a map on your website to show real-time data. The Real-Time Map service can receive location data (Lat/Long or Zipcode) and display the data in real-time on a map that can be installed as a widget on your website or mobile application.  

With GeoDB Cities API, get the global city, region, and country data. Filter cities by name prefix, country, location, time-zone, and even minimum population. It displays results in multiple languages. Further, you can sort the results by name, country code, elevation, and population - or any combination of these. RESTful API adheres to industry best-practices, including HATEOAS-style links to facilitate paging results.  

IP2Location Olson Time Zone, or TZ data, is a free data offered to our valued customers. This data enables you to retrieve the Olson Time Zone value of a given city name. This piece of information is very useful if you need it for web display, dropdown box selection or other coding requirements.  

ipgeolocation's free Timezone API provides time and date related information such as current time, date in various formats, week, month, year, time in UNIX timestamp, UTC/GMT offset and daylight saving time from timezone name, any IPv4 or IPv6 address or geolocation coordinates in REST, JSON and XML format over secure HTTPS connection. The detailed timezone data consists of the current time, date in various date formats, daylight saving information and geolocation data  

City Geo-Location Lookup API gives you latitude, longitude, time-Zone of any city. The data generated by this API consists of the current time, date in various date formats, daylight saving information and geolocation data  

JSONTest.com is a testing platform for services utilizing JavaScript Object Notation (JSON). It is a JSON-based application that will return your IP address in the JSON form.  

freegeoip.app provides a free IP geolocation API for software developers. It uses a database of IP addresses that are associated with cities along with other relevant information like time zone, latitude, and longitude. With it, you allowed for up to 15,000 queries per hour by default. Once this limit is reached, all of your requests will result in HTTP 403, forbidden, until your quota is cleared.  

With IPLocate API, you can target users in different countries, personalize your user experience, geofence content, enforce rights management and compliance, and more. Using it, you can get all geolocation information from IPs.  

eXTReMe-IP-LOOKUP.COM is very simple to use API. Using it, you can get all geolocation information about an IP address in JSON, JSONP, and CSV format. It returns back the IP Type which can be 'Business', 'Education' or 'Residential'. As well as the full resolved IP Name. If the IP is a business or education it also returns the Business/Edu Name and Business/Edu Website when available.