Code:
gen time=date(date, "qy")
variable name: date
storage type: str7
display format: %9s

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str7 date
"Q1 1980"
"Q2 1980"
"Q3 1980"
"Q4 1980"
"Q1 1981"
"Q2 1981"
"Q3 1981"
"Q4 1981"
"Q1 1982"
"Q2 1982"
"Q3 1982"
"Q4 1982"
"Q1 1983"
"Q2 1983"
"Q3 1983"
"Q4 1983"
"Q1 1984"
"Q2 1984"
"Q3 1984"
"Q4 1984"
"Q1 1985"
"Q2 1985"
"Q3 1985"
"Q4 1985"
"Q1 1986"
"Q2 1986"
"Q3 1986"
"Q4 1986"
"Q1 1987"
"Q2 1987"
"Q3 1987"
"Q4 1987"
"Q1 1988"
"Q2 1988"
"Q3 1988"
"Q4 1988"
"Q1 1989"
"Q2 1989"
"Q3 1989"
"Q4 1989"
"Q1 1990"
"Q2 1990"
"Q3 1990"
"Q4 1990"
"Q1 1991"
"Q2 1991"
"Q3 1991"
"Q4 1991"
"Q1 1992"
"Q2 1992"
"Q3 1992"
"Q4 1992"
"Q1 1993"
"Q2 1993"
"Q3 1993"
"Q4 1993"
"Q1 1994"
"Q2 1994"
"Q3 1994"
"Q4 1994"
"Q1 1995"
"Q2 1995"
"Q3 1995"
"Q4 1995"
"Q1 1996"
"Q2 1996"
"Q3 1996"
"Q4 1996"
"Q1 1997"
"Q2 1997"
"Q3 1997"
"Q4 1997"
"Q1 1998"
"Q2 1998"
"Q3 1998"
"Q4 1998"
"Q1 1999"
"Q2 1999"
"Q3 1999"
"Q4 1999"
"Q1 2000"
"Q2 2000"
"Q3 2000"
"Q4 2000"
"Q1 2001"
"Q2 2001"
"Q3 2001"
"Q4 2001"
"Q1 2002"
"Q2 2002"
"Q3 2002"
"Q4 2002"
"Q1 2003"
"Q2 2003"
"Q3 2003"
"Q4 2003"
"Q1 2004"
"Q2 2004"
"Q3 2004"
"Q4 2004"
end


Hi, I'm having a lot of issues trying to convert my data into a time series data set as quarterly data. For some reason, I'm unable to do so. Please could anyone help me out with this? Thank you.