*Sunnudagur (Sunday): Named after the sun
*Mánudagur (Monday): Named after the moon
*Þriðjudagur (Tuesday): Named after the Old Norse god Týr
*Miðvikudagur (Wednesday): Named after the middle of the week
*Fimmtudagur (Thursday): Named after the number five
*Föstudagur (Friday): Named after the Old Norse goddess Frigg
*Laugardagur (Saturday): Named after the hot springs that are common in Iceland
Bonus information:
* The Icelandic names for Monday and Tuesday are derived from the Old Norse words for these days, which were also named after the moon and Týr.
* The Icelandic name for Wednesday is derived from the Old Norse word for "midweek", which was also used in English.
* The Icelandic names for Thursday and Friday are derived from the Old Norse words for these days, which were also used in English.
* The Icelandic name for Saturday is derived from the Old Norse word for "washing day", which was also used in English.