LDAP Timestamp Converter [2025]
Convert Active Directory timestamps to human-readable dates. Essential for system administrators and Windows developers.
Understanding LDAP Timestamps
Format Specification
- •
Time Base
100-nanosecond intervals since January 1, 1601 UTC
- •
Format Length
18-digit integer or scientific notation
- •
Precision
High precision with nanosecond accuracy
Common Uses
- •
Active Directory
User account timestamps, password expiry
- •
Windows System
File creation times, system events
- •
System Logs
Event logs, security audits
Common LDAP Attributes
User Attributes
- •
pwdLastSet
Last password change timestamp
- •
accountExpires
Account expiration date
- •
lastLogon
Last successful login time
System Attributes
- •
whenCreated
Object creation timestamp
- •
whenChanged
Last modification time
- •
badPasswordTime
Last failed login attempt
Frequently Asked Questions
Why do LDAP timestamps start from 1601?
The Windows NT timestamp format starts from January 1, 1601, as this was the start of the Georgian calendar adoption. This date was chosen by Microsoft for consistency with the NTFS file system.
How accurate are LDAP timestamps?
LDAP timestamps provide extremely high precision with 100-nanosecond intervals. This level of precision is useful for system events and debugging but may be more detail than needed for general use.
What's the maximum date these timestamps can represent?
With 18 digits, LDAP timestamps can represent dates well beyond the year 30000, making them suitable for any practical application requiring future dates.
How do I handle scientific notation?
Our converter automatically handles both standard integer format and scientific notation (e.g., 1.32539220002262206E+17). Both formats will be correctly converted to human-readable dates.
Comments
No comments yet
Be the first to share your thoughts! Your feedback helps us improve our tools and inspires other users.
More Time Tools
Age Calculator
Calculate your age & remaining time on this planet
Age Difference Calculator
Determine difference in ages
Business Day Calculator
Calculate the number of business days between two dates
Chrome Timestamp Converter
Convert Chrome/Webkit timestamps into human readable dates
Clarion Date Converter
Convert between Clarion and human-readable dates
Countdown Timer
Everything you ever wanted in a timer
Date Difference Calculator
Determine the difference between two dates
Date Formatter
Format dates in all kinds of ways
Discord Timestamp Converter
Convert any date to Discord's own format
DMESG Timestamp Converter
Convert Linux DMESG dates to human readable ones
JSON Timestamp Converter
Convert JSON dates to standard formats
Leap Year Calculator
Find out when the next leap years take place
MongoDB Timestamp Converter
Convert ObjectIDs to human readable dates
NTP Timestamp Converter
Convert between NTP format and regular timestamps
Pomodoro Timer
Use this famous focus technique to your advantage
Retirement Calculator
Calculate the time until you reach retirement
Roman Date Converter
Convert between Roman and Gregorian dates
SQL Timestamp Converter
Convert between different date formats in SQL Server
Time Unit Converter
Convert from miliseconds all the way to years
Timezone Converter
Travel across the globe with our timezone converter
Week Number Calculator
Find out what week number a specific date has
Windows Timestamp Converter
Convert Integer8 to human readable dates
Work Hours Calculator
Calculate your work hours over a given time period