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Time - Timer and Date Functions
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- Get day of Year Julian date
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Get day of Year Julian date
Keywords: 3 digit Day of Year Julian date
Question:
Where I work we use a calendar that starts with Julian Date 001 on January 1 and ends with Julian Date 365 on December 31.I would like to make a little script that would get return the Julian Date based on the date.
Any suggestions?
Answer:
Julian date has a *whole* bunch of different definitions. We call the one you want "Day of year". Try...
ToDate=TimeYmdHms()
ThisYear=ItemExtract(1,ToDate,":")
JanFirst="%thisyear%:01:01:00:00:00"
JanFirstJulian=TimeJulianDay(JanFirst)
ToJulian=TimeJulianDay(ToDate)
dayofyear=ToJulian-JanFirstJulian+1
dayofweekcode=(ToJulian+5) mod 7
day=ItemExtract(dayofweekcode+1, "Sun Mon Tue Wed Thu Fri Sat", " ")
line=StrCat("Julian Date-> ", ToJulian,@CRLF,"Day of Year->",DayofYear,@CRLF,"Day of week-> ",day)
Message(TimeDate(), line)
Also here are some UDfs you can use to determine this type of information
#DefineFunction DayOfYear(ToDate)
ThisYear=ItemExtract(1,ToDate,":")
JanFirst="%thisyear%:01:01:00:00:00"
JanFirstJulian=TimeJulianDay(JanFirst)
ToJulian=TimeJulianDay(ToDate)
doy=ToJulian-JanFirstJulian+1
return (doy)
#EndFunction
#DefineFunction DayOfWeek(ToDate)
ToJulian=TimeJulianDay(ToDate)
dayofweekcode=(ToJulian+5) mod 7
day=ItemExtract(dayofweekcode+1, "Sun Mon Tue Wed Thu Fri Sat", " ")
return(day)
#endfunction
now=TimeYmdHms()
doy=DayOfYear(now)
dow=DayOfWeek(now)
Message(doy,dow)
exit
Article ID: W14978
File Created: 2001:11:08:12:41:16
Last Updated: 2001:11:08:12:41:16