Index: firmware/include/timefuncs.h
===================================================================
--- firmware/include/timefuncs.h	(revision 14825)
+++ firmware/include/timefuncs.h	(working copy)
@@ -29,6 +29,7 @@
 bool valid_time(const struct tm *tm);
 #if CONFIG_RTC
 time_t mktime(struct tm *t);
+struct tm* localtime(const time_t *timer);
 #endif
 
 #endif /* _TIMEFUNCS_H_ */
Index: firmware/common/timefuncs.c
===================================================================
--- firmware/common/timefuncs.c	(revision 14825)
+++ firmware/common/timefuncs.c	(working copy)
@@ -166,4 +166,76 @@
     result += t->tm_sec;
     return(result);
 }
+struct tm* localtime(const time_t *timer)
+{
+    time_t work;
+    int i, days = 0, years = 70;
+    static int m_to_d[12] =
+        {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
+    work = *timer;
+    tm.tm_sec = work % 60;
+    work /= 60; /*now have the number of minutes since epoch*/
+    tm.tm_min = work % 60;
+    work /= 60;/*now have the number of hours since epoch*/
+    tm.tm_hour = work % 24;
+    work /= 24;/*now have the number of days since epoch*/
+    
+    for (i = 1970; days <= work; i++)
+    {
+        if (i % 4 != 0) /*not a leap year*/
+        {
+            days += 365;
+            if(days >= work) 
+            { 
+                days -= 365; 
+                break;
+            }
+        }
+        else if (i % 400 == 0) /* leap year*/
+        {
+            days += 366;
+            if(days >= work) 
+            { 
+                days -= 366; 
+                break;
+            }
+        }
+        else if (i % 100 == 0) /* not a leap year*/
+        {
+            days += 365;
+            if(days >= work) 
+            { 
+                days -= 365; 
+                break;
+            }
+        }
+        else /* leap year*/
+        {
+            days += 366;
+            if(days >= work) 
+            { 
+                days -= 366; 
+                break;
+            }
+        }
+        years += 1;
+    }
+    days = work - days;
+    tm.tm_yday = days;
+    tm.tm_year = years;
+    for(i=0; i<12; i++)
+    {
+        if (m_to_d[i] > days)
+        {
+            i--;
+            break;
+        }
+    }
+    tm.tm_mon = i;
+    tm.tm_mday = days - m_to_d[i] + 1;
+    tm.tm_wday = (days % 7 + 4) % 7;
+    return &tm;
+}
+
+
 #endif