1<<fe_unit,`units`>> are calculated as follows: 2 3[width="50%", cols="<m,<m,", options="header"] 4|=== 5|Unit|Seconds|Note 6|seconds|1|One second 7|minutes|60|Calculated as 60 seconds 8|hours|3600|Calculated as 60 minutes (60*60) 9|days|86400|Calculated as 24 hours (24*60*60) 10|weeks|604800|Calculated as 7 days (7*24*60*60) 11|months|2592000|Calculated as 30 days (30*24*60*60) 12|years|31536000|Calculated as 365 days (365*24*60*60) 13|=== 14