Taghut or Taghout - Arabic: طاغوت - is a term that is specifically used to denounce everything that is worshiped instead or besides Allah.
Muslims say "In the name of God, the Most Gracious, the most Merciful", the Basmalah. The attributes are used as synonyms, but there is a fine difference.
The Islamic calendar (Hijri) is a lunar calendar. It started in 622 CE. With a simple formula, it is easy to convert dates.