Date/time components

When working with date values, you often have to compose a date/time from its components or need to access the components of a date/time value. This recipe shows how it can be done.

How to do it...

• To build a date/time value from parts, use the time.Date function
• To get the parts of a date/time value, use the time.Time methods:
  • time.Day() int
  • time.Month() time.Month
  • time.Year() int
  • time.Date() (year, month, day int)
  • time.Hour() int
  • time.Minute() int
  • time.Second() int
  • time.Nanosecond() int
  • time.Zone() (name string,offset int)
  • time.Location() *time.Location

time.Date will create a time value from its components:

d := time.Date(2020, 3, 31, 15, 30, 0, 0, time.UTC)
fmt.Println(d)
// 2020-03-31 15:30:00 +0000 UTC

The output will be normalized, as follows:

d := time.Date(2020, 3, 0, 15, 30, 0, 0, time.UTC)
fmt.Println(d)
// 2020-02-29 15:30:00 +0000 UTC

Since the day of the month starts from 1, creating a date with a 0 day will result in the last...