<<fe_unit,`units`>> are calculated as follows:

[width="50%", cols="<m,<m,", options="header"]
|===
|Unit|Seconds|Note
|seconds|1|One second
|minutes|60|Calculated as 60 seconds
|hours|3600|Calculated as 60 minutes (60*60)
|days|86400|Calculated as 24 hours (24*60*60)
|weeks|604800|Calculated as 7 days (7*24*60*60)
|months|2592000|Calculated as 30 days (30*24*60*60)
|years|31536000|Calculated as 365 days (365*24*60*60)
|===
