ChangeTime Stored in Stored in Not Not Stored in UTC UTC Supported Supported UTC if available, 100 100 else in local nanosecond nanosecond time granularity granularity 1 microsecond granularity LastWriteTime Stored in Stored in Stored in Stored in Stored in UTC UTC time UTC if UTC if available, available, 100 100 2 second else in else in local nanosecond nanosecond granularity local time time granularity granularity 10 1 millisecond microsecond granularity granularity <18> Section 2.1.1.3: Only NTFS implements EAs. <19> Section 2.1.1.3: Only NTFS implements EAs. <20> Section 2.1.1.3: Only NTFS implements object IDs. <21> Section 2.1.1.3: Only NTFS implements object IDs. <22> Section 2.1.1.3: Only NTFS and UDFS implement named streams. <23> Section 2.1.1.3: ReFS and exFAT do not implement ShortNames. <24> Section 2.1.1.3: Only NTFS implements encryption. <25> Section 2.1.1.4: For ReFS, there will always be exactly one link per file or directory. <26> Section 2.1.1.4: On ReFS or exFAT, this field MUST be empty. <27> Section 2.1.1.4: The following table defines the support of file time stamps across various Windows file systems. More information can be found in section 6 of the File System Behavior Overview document [FSBO]. Timestamp ReFS NTFS FAT UDFS CreationTime Stored in Stored in Stored in Stored in Stored in UTC UTC local time UTC if UTC if available, available, 100 100 10 else in else in local nanosecond nanosecond millisecond time time granularity granularity granularity 10 1 millisecond microsecond granularity granularity LastAccessTime Stored in Stored in Stored in Stored in Stored in UTC UTC local time UTC if UTC if available, available, 100 100 1 day else in else in local nanosecond nanosecond granularity local time time granularity granularity
ChangeTime Stored in UTC 100 nanosecond granularity Stored in UTC 100 nanosecond granularity Not Supported Not Supported Stored in UTC if available, else in local time 1 microsecond granularity LastWriteTime Stored in UTC 100 nanosecond granularity Stored in UTC 100 nanosecond granularity Stored in time 2 second granularity Stored in UTC if available, else in local time 10 millisecond granularity Stored in UTC if available, else in local time 1 microsecond granularity <18> Section 2.1.1.3: Only NTFS implements EAs. <19> Section 2.1.1.3: Only NTFS implements EAs. <20> Section 2.1.1.3: Only NTFS implements object IDs. <21> Section 2.1.1.3: Only NTFS implements object IDs. <22> Section 2.1.1.3: Only NTFS and UDFS implement named streams. <23> Section 2.1.1.3: ReFS and exFAT do not implement ShortNames. <24> Section 2.1.1.3: Only NTFS implements encryption. <25> Section 2.1.1.4: For ReFS, there will always be exactly one link per file or directory. <26> Section 2.1.1.4: On ReFS or exFAT, this field MUST be empty. <27> Section 2.1.1.4: The following table defines the support of file time stamps across various Windows file systems. More information can be found in section 6 of the File System Behavior Overview document [FSBO]. Timestamp ReFS NTFS FAT UDFS CreationTime Stored in UTC 100 nanosecond granularity Stored in UTC 100 nanosecond granularity Stored in local time 10 millisecond granularity Stored in UTC if available, else in time 10 millisecond granularity Stored in UTC if available, else in local time 1 microsecond granularity LastAccessTime Stored in UTC 100 nanosecond granularity Stored in UTC 100 nanosecond granularity Stored in local time 1 day granularity Stored in UTC if available, else in local time Stored in UTC if available, else in local time