cibmasti lujvo

x1 is March/the third month of year x2 in calendar x3.

Duration. For date, use masnci. Cf. pavmasti, nanca.

In notes:

fipma'i
x1 is March of year x2 in calendar x3.
pavmasti
x1 is January/the first month of year x2 in calendar x3.
cibmast
March.