modifyTimestamp

For entries updated over protocol (by an LDAP modify request, for example), this operational attribute reflects the time the entry was last modified.

Origin	RFC 4512
Usage	directoryOperation
OID	2.5.18.2
Substring Matching Rule	caseIgnoreSubstringsMatch
Equality Matching Rule	generalizedTimeMatch
Single Value	true
Names	modifyTimestamp
Ordering Matching Rule	generalizedTimeOrderingMatch
User Modification Allowed	false
Schema File	00-core.ldif
Syntax	Generalized Time