Although originating in Roman mythology, many of our names for days of the week came from the Vikings.
“Sunday” is a tribute to the sun.
“Monday” is a tribute to the moon.
“Tuesday” is from the Germanic war god Tiu.
“Wednesday” takes its name from the Germanic sky god Woden.
“Thursday” is from the Norse thunder god Thor.
“Friday” is from the Norse love goddess Frigg.
“Saturday” is named after the Roman god Saturn.