I want to set the baseline category of a date variable. I thought of using fvset, see below. It doesn't seem to allow specifying dates as baseline categories.

Any ideas?

MWE:
Code:
clear
sysuse xtline1.dta

gen random = runiform()
gen binary = (random > 0.5)

fvset td(09feb2002) day
reg calories i.binary##i.day