humanize_time.rb

>>  Time.parse("10:47 pm").humanize
# => "About a quarter til eleven"
>>  Time.parse("10:31 pm").humanize
# => "About half past ten"
>>  Time.parse("10:07 pm").humanize
# => "About ten"
>>  Time.parse("23:58").humanize
# => "About midnight"
>>  Time.parse("00:29").humanize
# => "About 12:30"