The Hindu week, like the European calendar, has seven
days.
Each day has a governing planet, is associated with one or
more presiding deities, and is seen as more or less auspicious (in line with
the overall Indian attitude toward time).
Tuesday and Saturday are the unluckiest days, since they are
associated with the planets Mars and Saturn, respectively.
Monday (moon), Thursday (Jupiter), and Friday (Venus) are
considered fortunate days since these planets are considered compassionate and
strong.
Sunday (the sun) and Wednesday (Mercury) have no significant
connections since, although benign, these bodies are nevertheless seen as
having a limited impact.
You may also want to read more about Hinduism here.
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