go time and timestamp operations of summary

Basic operation

01: Gets the current time

dateTime := time.Now()
fmt.Println(dateTime)

02: Get minutes, nanoseconds, months, days, years

year := time.Now().Year() // years 

fmt.Println(year)

month := time.Now().Month() // month 
fmt.Println(month)

day := time.Now().Day() // day 
fmt.Println(day)

hour := time.Now().Hour() // hours 
fmt.Println(hour)

minute := time.Now().Minute() // minutes 
fmt.Println(minute)

second := time.Now().Second() // seconds 
fmt.Println(second)

nanosecond := time.Now().Nanosecond() // A nanosecond 
fmt.Println(nanosecond)

03: Gets the current timestamp

timeUnix := time.Now().Unix()     // Unit s 
timeUnixNano := time.Now().UnixNano() // The unit of nanoseconds 
  
fmt.Println(timeUnix)
fmt.Println(timeUnixNano)

04: Format the timestamp

fmt.Println(time.Now().Format("2006-01-02 15:04:05"))

05: Time stamp to go format

var timeUnix int64 = 1562555859
fmt.Println(time.Unix(timeUnix,0))

//  And then you can use Format  Such as 
fmt.Println(time.Unix(timeUnix, 0).Format("2006-01-02 15:04:05"))

06: str formatting time turn time stamp

t := time.Date(2014, 1, 7, 5, 50, 4, 0, time.Local).Unix()

fmt.Println(t)

Calculation of time

01: Gets the time stamp at 0:00 0:00 today

currentTime := time.Now()
startTime := time.Date(currentTime.Year(), currentTime.Month(), currentTime.Day(), 0, 0, 0, 0, currentTime.Location())
fmt.Println(startTime)
fmt.Println(startTime.Format("2006/01/02 15:04:05"))

02: Get today's 23:59:59 time stamp

currentTime := time.Now()
endTime := time.Date(currentTime.Year(), currentTime.Month(), currentTime.Day(), 23, 59, 59, 0, currentTime.Location())
fmt.Println(endTime)
fmt.Println(endTime.Format("2006/01/02 15:04:05"))

03: Gets the time before 1 minute

m, _ := time.ParseDuration("-1m")
result := currentTime.Add(m)

fmt.Println(result)
fmt.Println(result.Format("2006/01/02 15:04:05"))

04: Gets the time 1 hour ago

m, _ := time.ParseDuration("-1h")
result := currentTime.Add(m)
fmt.Println(result)
fmt.Println(result.Format("2006/01/02 15:04:05"))

05: Gets the time after 1 minute

year := time.Now().Year() // years 

fmt.Println(year)

month := time.Now().Month() // month 
fmt.Println(month)

day := time.Now().Day() // day 
fmt.Println(day)

hour := time.Now().Hour() // hours 
fmt.Println(hour)

minute := time.Now().Minute() // minutes 
fmt.Println(minute)

second := time.Now().Second() // seconds 
fmt.Println(second)

nanosecond := time.Now().Nanosecond() // A nanosecond 
fmt.Println(nanosecond)

0

06: Gets the time after 1 hour

year := time.Now().Year() // years 

fmt.Println(year)

month := time.Now().Month() // month 
fmt.Println(month)

day := time.Now().Day() // day 
fmt.Println(day)

hour := time.Now().Hour() // hours 
fmt.Println(hour)

minute := time.Now().Minute() // minutes 
fmt.Println(minute)

second := time.Now().Second() // seconds 
fmt.Println(second)

nanosecond := time.Now().Nanosecond() // A nanosecond 
fmt.Println(nanosecond)

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07: Calculate two timestamps

year := time.Now().Year() // years 

fmt.Println(year)

month := time.Now().Month() // month 
fmt.Println(month)

day := time.Now().Day() // day 
fmt.Println(day)

hour := time.Now().Hour() // hours 
fmt.Println(hour)

minute := time.Now().Minute() // minutes 
fmt.Println(minute)

second := time.Now().Second() // seconds 
fmt.Println(second)

nanosecond := time.Now().Nanosecond() // A nanosecond 
fmt.Println(nanosecond)

2

08: Determine whether a time is after a time

stringTime, _ := time.Parse("2006-01-02 15:04:05", "2019-12-12 12:00:00")
beforeOrAfter := stringTime.After(time.Now())

if true == beforeOrAfter {
  fmt.Println("2019-12-12 12:00:00 After the current time !")
} else {
  fmt.Println("2019-12-12 12:00:00 Before the current time !")
}

09: Determine how much time has passed between one time and the other

year := time.Now().Year() // years 

fmt.Println(year)

month := time.Now().Month() // month 
fmt.Println(month)

day := time.Now().Day() // day 
fmt.Println(day)

hour := time.Now().Hour() // hours 
fmt.Println(hour)

minute := time.Now().Minute() // minutes 
fmt.Println(minute)

second := time.Now().Second() // seconds 
fmt.Println(second)

nanosecond := time.Now().Nanosecond() // A nanosecond 
fmt.Println(nanosecond)

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