Now is a time toolkit for golang
A natural language date/time parser with pluggable rules
The latlong package maps from a latitude and longitude to a timezone.
Monday is a minimalistic l10n, i18n package for translation of month and day of week names in time.Date objects.
MS Excel (TM) syntax for Go time/date
Port of moment.js to Golang with some additional features for working with dates and times
Go package for time formating based on current time (eg: "3 hours ago")
Date interaction for Golang, with strftime formatting for time