Is there an API to find the time per week for overseas (US)?

Hello.

We are preparing a service in the U.S. this time.

You want to send a PUSH message at a specific time In the case of the United States, there seems to be a time difference for each state, so I wonder if there is an API to find the time of the week.

First of all, with the user's GPS information, the local information is brought through the Google geocode API I can't find a time zone in your area.

Is there an API to get the current time of the region with IP, GPS, or local information?

Please give me your opinion.

Then have a good day today.