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To generate random dates between two dates, you can use the RANDBETWEEN function, together with the DATE function. See example below: Formula =RANDBETWEEN(date1,date2) Explanation In the example shown, the formula in B5 is: =RANDBETWEEN(DATE(2016,1,1),DATE(2016,12,31)) This formula is then copied down from B5 to B11. The result is random dates between Jan 1, 2016 and Dec… read more »
To get the nth day of year based on a given date, you can use a formula based on the DATE and YEAR functions. Formula =date-DATE(YEAR(date),1,0) Explanation In the example shown, the formula in C5 is: =B4-DATE(YEAR(B4),1,0) With the date “June 1, 2016” in cell B4, the formula returns 153, since June 1st is the 153rd day… read more »
If you want to test whether the year of a certain date is a leap year, you can use a formula that uses the MONTH, YEAR, and DATE functions. Formula =MONTH(DATE(YEAR(date),2,29))=2 Explanation In the example shown, the formula in cell C5 is: =MONTH(DATE(YEAR(B5),2,29))=2 How the formula works The core of this formula is the DATE… read more »
If need to generate a dynamic series of dates with a formula that increase by one year from a single start date, you can do so with a formula that uses the DAY, MONTH, YEAR, and DATE functions. Formula =DATE(YEAR(date)+1,MONTH(date),DAY(date)) Explanation In the example, B6 is the hard-coded start date and the formula in B7… read more »
This tutorial shows how to Convert date to Julian format in Excel using example below. If you need to convert a date to a Julian date format in Excel, you can do so by building a formula that uses the TEXT, YEAR, and DATE functions. Formula =YEAR(date)&TEXT(date-DATE(YEAR(date),1,0),”000″) Explanation Background “Julian date format” refers to a… read more »
This tutorial shows how to Convert Excel time to Unix time in Excel using example below. To convert a time in Excel’s format to a Unix time stamp, you can use a formula based on the DATE function. Formula =(A1-DATE(1970,1,1))*86400 > Explanation In the example shown, the formula in C5 is: =(B5-DATE(1970,1,1))*86400 How this formula… read more »
This tutorial shows how to Convert text date dd/mm/yy to mm/dd/yy in Excel using example below. To convert dates in text format dd/mm/yy to a true date in mm/dd/yy format, you can use uses a formula based on the DATE function. Formula =DATE(RIGHT(A1,2)+2000,MID(A1,4,2),LEFT(A1,2)) Explanation In the example shown, the formula in C5 is: =DATE(RIGHT(B5,2)+2000,MID(B5,4,2),LEFT(B5,2)) Which… read more »
This tutorial show how to Convert Unix time stamp to Excel date using the example below. To convert a time in Excel’s format to a Unix time stamp, you can use a formula based on the DATE function. Formula =(A1/86400)+DATE(1970,1,1) Explanation of how this formula works In the example shown, the formula in C5 is: =(B5/86400)+DATE(1970,1,1) The Unix… read more »
This tutorial show how to Convert text to date in Excel using the example below. To convert text in an unrecognized date format to a proper Excel date, you can parse the text and assemble a proper date with a formula based on several functions: DATE, LEFT, MID, and RIGHT. Note: Before you go the formula route, see… read more »
This tutorial show how to get date from day number in Excel using the example below. To get a real date from day number, or “nth day of year” you can use the DATE function. Formula =DATE(year,1,daynum) Explanation of how this formula works In the example shown, the formula in C5 is: =DATE(2015,1,B5) The DATE function build… read more »