I want to sync events from google calendar to save to mysql database. when I check it from google calendar it provide the ics url file and I can load it to my program. But it provide all the events. How can I get events by custom date?
Unfortunately, this is not possible to do.
The ICS format is a universal calendar format designed for an easy way of sending event and scheduling data between applications.
While it is possible to create an ICS file containing all the details of a Google Calendar, Google does not provide a way of allowing you to pick events by custom date, at least via the API.
You can use the Google Calendar API - specifically the Events: list method to get a list of events, specifying the time frame for which you wish to retrieve events, but from there you will either have to process the response in a different way (the API response comes in a JSON file as demonstrated here), or you will have to convert this data into the iCalendar format before putting it into your database.