Can it be snámhaim i lúil?
It could be snámhain san Iúil
Why not "i Iúil"?
"Ólann na cailíní uisce i mí an Mheithimh" (correct according to DuoLingo)
but not "Snámhaim i mí an Iúill"? (incorrect according to DuoLingo)
What causes "an" to be used in the first sentence but not the second?
It won't accept 'snámhann mé i mí Iúil' which surely should be accurate as well. [Apologies, trying to stick to N.I. versions as much as possible to fit in with my rang oíche.]