I would like to create a variable where there is only two variables (0=heating, 1=non-heating)

I have the following date variable
startdate
DDMMYYY

Originally I would like to;
gen season=.
recode season .=o if startdate==01nov-31april
recode season .=1 if startdate==01may-31oct

But I don't know how apply the range from a date variable.


Any help is very much appreciated

Best
Charlotte