diff --git a/include/utils/ZipFileRO.h b/include/utils/ZipFileRO.h
index 3a99979..547e36a 100644
--- a/include/utils/ZipFileRO.h
+++ b/include/utils/ZipFileRO.h
@@ -38,6 +38,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <time.h>
 
 namespace android {
 
@@ -174,6 +175,20 @@
         size_t uncompLen, size_t compLen);
 
     /*
+     * Utility function to convert ZIP's time format to a timespec struct.
+     */
+    static inline void zipTimeToTimespec(long when, struct tm* timespec) {
+        const long date = when >> 16;
+        timespec->tm_year = ((date >> 9) & 0x7F) + 80; // Zip is years since 1980
+        timespec->tm_mon = (date >> 5) & 0x0F;
+        timespec->tm_mday = date & 0x1F;
+
+        timespec->tm_hour = (when >> 11) & 0x1F;
+        timespec->tm_min = (when >> 5) & 0x3F;
+        timespec->tm_sec = (when & 0x1F) << 1;
+    }
+
+    /*
      * Some basic functions for raw data manipulation.  "LE" means
      * Little Endian.
      */