Add Date Ordinals (UK Date Format) in Go

Go, despite its robust standard library, does not support ordinal dates out of the box like ‘th’ and ‘st’. This makes producing dates in the format “1st January 2000” much harder - which we use a lot here in the UK. In this post we’ll aim to show how you can make this easier. For reference, these are the options Go uses when chosing a new format: 1 Mon Jan 2 15:04:05 MST 2006 Our example below implements this for ourselves, as we create formatDateWithOrdinal() to print a given time in this format. This uses all three of the .Day() .Month() and .Year() functions within the time package, but passes the day through our extra function to add the ordinal.