Days in one week (7) (ISO)
Hours in a typical day (24) (ISO).
Hours in a typical week.
Milliseconds in a typical day (ISO).
Milliseconds in one hour (ISO)
Milliseconds in one minute (ISO)
Milliseconds in one second (1000) (ISO)
Milliseconds in a typical week (ISO).
Minutes in a typical day (ISO).
Minutes in one hour (ISO)
Minutes in a typical week (ISO).
Seconds in a typical day (ISO).
Seconds in one hour (ISO)
Seconds in one minute (60) (ISO)
Seconds in a typical week (ISO).
A bunch of constants taken from Joda-Time because we don't necessarily want to include Joda-Time but want access to the constants. If using Joda-Time, just include those.