Notice that the sound and spelling of some months can change (lenition) when you put anns before them. Remember what happened when you put anns before a place name like:
An Gearasdan Fort William >>> Anns a’ Ghearasdan in Fort William
The same happens with months, where it can:
Mar eisimplier:
An Gerran February >>> anns a’ Ghearran in February
Am Màrt March >>> anns a’ Mhàrt in March
