diff --git a/README b/README
index 86b4c63..7399736 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-mini-at
+mini-at                      http://www.lwithers.me.uk/projects/mini-at/
 ========================================================================
 (c)2006, Laurence Withers, <l@lwithers.me.uk>.
 Released under the GNU GPLv2. See file COPYING or 
@@ -7,6 +7,8 @@ http://www.gnu.org/copyleft/gpl.html for details.
 Really Quick Instructions
 -------------------------
 
+Install libiso8601 from http://www.lwithers.me.uk/projects/libiso8601/ .
+
 To build: ./make.sh
 To install: ./make.sh install
     (you might want to set PREFIX, by default it's /usr/local)
diff --git a/src/mini-at/TopSource.c b/src/mini-at/TopSource.c
index f215c82..f7a39eb 100644
--- a/src/mini-at/TopSource.c
+++ b/src/mini-at/TopSource.c
@@ -16,6 +16,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/un.h>
+#include <iso8601.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 
diff --git a/src/mini-at/build.app b/src/mini-at/build.app
index 064ba34..5e2be31 100644
--- a/src/mini-at/build.app
+++ b/src/mini-at/build.app
@@ -6,7 +6,8 @@
 if [ -z ${mini_at_BUILT} ]
 then
     mini_at="obj/mini-at"
-    EXTRAS="" # @TODO@ cflags, libs
+    [ -z "${LIBISO8601_FLAGS}" ] && LIBISO8601_FLAGS="$(pkg-config libiso8601 --libs --cflags)"
+    EXTRAS="${LIBISO8601_FLAGS}"
 
     echo "Building application ${mini_at}..."
 
diff --git a/src/mini-at/time.c b/src/mini-at/time.c
index 7fe49df..055cd4d 100644
--- a/src/mini-at/time.c
+++ b/src/mini-at/time.c
@@ -7,426 +7,18 @@
 
 
 
-int parse_time_digs(const char* str, int numdigs)
-{
-    int i = 0;
-    char ch;
-
-    while(numdigs--) {
-        switch( (ch = *str++) ) {
-        case '0' ... '9':
-            i *= 10;
-            i += ch - '0';
-            break;
-
-        default:
-            return -1;
-        }
-    }
-
-    return i;
-}
-
-
-
-int parse_time_date_daysinyear(int year)
-{
-    if(!(year % 400)) return 366;
-    if(!(year % 100)) return 365;
-    if(!(year % 4)) return 366;
-    return 365;
-}
-
-
-
-struct parse_time_date_dayselapsed_t {
-    int ndays, elapsed;
-};
-
-struct parse_time_date_dayselapsed_t parse_time_date_dayselapsed_cal[] = {
-    { 31, 0 },
-    { 28, 31 },
-    { 31, 59 },
-    { 30, 90 },
-    { 31, 120 },
-    { 30, 151 },
-    { 31, 181 },
-    { 31, 212 },
-    { 30, 243 },
-    { 31, 273 },
-    { 30, 304 },
-    { 31, 334 }
-};
-
-struct parse_time_date_dayselapsed_t parse_time_date_dayselapsed_leapcal[] = {
-    { 31, 0 },
-    { 29, 31 },
-    { 31, 60 },
-    { 30, 91 },
-    { 31, 121 },
-    { 30, 152 },
-    { 31, 182 },
-    { 31, 213 },
-    { 30, 244 },
-    { 31, 274 },
-    { 30, 305 },
-    { 31, 335 }
-};
-
-int parse_time_date_dayselapsed(int year, int mon, int day)
-{
-    struct parse_time_date_dayselapsed_t* t;
-
-    --mon;
-    if(mon < 0 || mon > 11) return -1;
-
-    if(parse_time_date_daysinyear(year) == 366) t = parse_time_date_dayselapsed_leapcal;
-    else t = parse_time_date_dayselapsed_cal;
-
-    t += mon;
-    --day;
-    if(day < 0 || day > t->ndays) return -1;
-
-    return day + t->elapsed;
-}
-
-
-
-// number of seconds elapsed between 1970 and start of `year'
-time_t parse_time_date_mkyear(int year)
-{
-    long nd;
-
-    // we have an inverse y2k problem!
-    //  basically, the algorithm needs to operate on a 400-year boundary for leap days
-    //  since this is `at', we don't deal with dates in the past
-    //  time_t can't deal with dates earlier than 1970
-    //  so 2000 seems a logical place to start
-    year -= 2000;
-    if(year < 0) return -1;
-
-    /* Every 4th year is leap
-     * unless it's a century (not leap)
-     * unless it's a 4*century (leap)
-     *
-     * So there are 97 leap days in 400 years, giving 365 * 400 + 397 = 146097 days
-     * For each 100 years, there are 24 leaps, giving 365 * 100 + 24 = 36524 days
-     * For each 4 years, there is 1 leap, giving 365 * 4 + 1 = 1461 days
-     */
-    nd = 146097l * (year / 400);
-    year %= 400;
-    if(year) {
-        nd += 36524 * (year / 100);
-        year %= 100;
-        nd += 1461 * (year / 4);
-        if(year) {
-            year %= 4;
-            nd += (year ? 1 : 0) + 365 * year;
-        } else {
-            nd++;
-        }
-    }
-
-    /* Now add number of days between 1970 and 2000 (7 leap years)
-     * 30 * 365 + 7 = 10957 */
-    nd += 10957;
-
-    // ignoring leap seconds, as time_t does, there are 86400 seconds in a day
-    nd *= 86400;
-
-    // done!
-    return (time_t)nd;
-}
-
-
-
-time_t parse_time_date_mkwk(int year, int wk, int wday)
-{
-//    time_t t;
-
-    fprintf(stderr, "ISO8601 week dates not supported yet\n");
-    return -1;
-
-/*
-    t = parse_time_date_mkyear(year);
-    if(t == (time_t)-1) return -1;
-*/
-}
-
-
-
-time_t parse_time_date_mkord(int year, int oday)
-{
-    time_t t;
-
-    if(oday < 1 || oday > parse_time_date_daysinyear(year)) return -1;
-    t = parse_time_date_mkyear(year);
-    if(t == (time_t)-1) return -1;
-
-    t += (oday - 1) * 86400;
-    return t;
-}
-
-
-
-time_t parse_time_date_mkcal(int year, int mon, int day)
-{
-    time_t t;
-
-    t = parse_time_date_mkyear(year);
-    if(t == (time_t)-1) return -1;
-
-    t += parse_time_date_dayselapsed(year, mon, day) * 86400;
-    return t;
-}
-
-
-
-time_t parse_time_date(const char* str, const char* end)
-{
-    int year, mon, day;
-    const char* pos;
-
-    // we don't deal with negative years -- this is at!
-    if(*str < '0' || *str > '9') return -1;
-
-    if( (pos = strchr(str, 'W')) ) {
-        if(strchr(pos, '-')) {
-            /* Either of:
-             *  yyyy-Www
-             *  yyyy-Www-d
-             */
-            switch(end - pos) {
-            case 3:
-                year = parse_time_digs(str, pos - str - 1);
-                mon = parse_time_digs(pos + 1, 2);
-                return parse_time_date_mkwk(year, mon, 1);
-
-            case 5:
-                year = parse_time_digs(str, pos - str - 1);
-                mon = parse_time_digs(pos + 1, 2);
-                day = parse_time_digs(pos + 4, 1);
-                return parse_time_date_mkwk(year, mon, day);
-
-            default:
-                return -1;
-            }
-
-        } else {
-            /* Either of:
-             *  yyyyWww
-             *  yyyyWwwd
-             */
-            switch(end - pos) {
-            case 3:
-                year = parse_time_digs(str, pos - str);
-                mon = parse_time_digs(pos + 1, 2);
-                return parse_time_date_mkwk(year, mon, 1);
-
-            case 4:
-                year = parse_time_digs(str, pos - str);
-                mon = parse_time_digs(pos + 1, 2);
-                day = parse_time_digs(pos + 3, 2);
-                return parse_time_date_mkwk(year, mon, day);
-
-            default:
-                return -1;
-            }
-        }
-
-    } else if( (pos = strchr(str, '-')) ) {
-        /* Valid extended formats are:
-         *  yyyy-mm         (year + len 3)
-         *  yyyy-ooo        (year + len 4)
-         *  yyyy-mm-dd      (year + len 6)
-         */
-        switch(end - pos) {
-        case 3:
-            year = parse_time_digs(str, pos - str);
-            mon = parse_time_digs(pos + 1, 2);
-            return parse_time_date_mkcal(year, mon, 1);
-
-        case 4:
-            year = parse_time_digs(str, pos - str);
-            day = parse_time_digs(pos + 1, 3);
-            return parse_time_date_mkord(year, day);
-
-        case 6:
-            year = parse_time_digs(str, pos - str);
-            mon = parse_time_digs(pos + 1, 2);
-            day = parse_time_digs(pos + 4, 2);
-            return parse_time_date_mkcal(year, mon, day);
-
-        default:
-            return -1;
-        }
-    }
-
-    /* Valid basic formats, excluding week formats, are:
-     *  yyyy            (len 4)
-     *  yyyymm          (len 6)
-     *  yyyyooo         (len 7)
-     *  yyyymmdd        (len 8)
-     */
-    
-    switch(end - str) {
-    case 4:
-        year = parse_time_digs(str, 4);
-        return parse_time_date_mkord(year, 1);
-
-    case 6:
-        year = parse_time_digs(str, 4);
-        mon = parse_time_digs(str + 4, 2);
-        return parse_time_date_mkcal(year, mon, 1);
-
-    case 7:
-        year = parse_time_digs(str, 4);
-        day = parse_time_digs(str + 4, 3);
-        return parse_time_date_mkord(year, day);
-
-    case 8:
-        year = parse_time_digs(str, 4);
-        mon = parse_time_digs(str + 4, 2);
-        day = parse_time_digs(str + 6, 2);
-        return parse_time_date_mkcal(year, mon, day);
-
-    default:
-        return -1;
-    }
-}
-
-
-
-int parse_time_time(const char* str, const char* end)
-{
-    const char* pos;
-    double d = 0;
-    char* endp;
-    int h = 0, m = 0, s = 0, ret;
-
-    pos = strchr(str, '.');
-    if(pos) {
-        errno = 0;
-        endp = 0;
-        d = strtod(pos, &endp);
-        if(errno || !endp) return -1;
-        switch(*endp) {
-        case 'Z':
-        case '+':
-        case '-':
-        case 0:
-            break;
-
-        default:
-            return -1;
-        }
-    } else {
-        pos = end;
-    }
-
-    /* Valid formats, excluding fraction, are:
-     *
-     *  hh              (len 2)
-     *  hhmm            (len 4)
-     *  hh:mm           (len 5)
-     *  hhmmss          (len 6)
-     *  hh:mm:ss        (len 8)
-     */
-    switch(pos - str) {
-    case 2:
-        h = parse_time_digs(str, 2);
-        ret = ((h + d) * 3600 + 0.5);
-        break;
-        
-    case 4:
-        h = parse_time_digs(str, 2);
-        m = parse_time_digs(str + 2, 2);
-        ret = h * 3600 + ((m + d) * 60 + 0.5);
-        break;
-
-    case 5:
-        h = parse_time_digs(str, 2);
-        m = parse_time_digs(str + 3, 2);
-        ret = h * 3600 + ((m + d) * 60 + 0.5);
-        break;
-
-    case 6:
-        h = parse_time_digs(str, 2);
-        m = parse_time_digs(str + 2, 2);
-        s = parse_time_digs(str + 4, 2);
-        ret = h * 3600 + m * 60 + s + d + 0.5;
-        break;
-
-    case 8:
-        h = parse_time_digs(str, 2);
-        m = parse_time_digs(str + 3, 2);
-        s = parse_time_digs(str + 6, 2);
-        ret = h * 3600 + m * 60 + s + d + 0.5;
-        break;
-        
-    default:
-        return -1;
-    }
-
-    // special cases
-    if(h == 24 && m == 0 && s == 0) return ret; // midnight at end of day
-    if(h == 23 && m == 59 && s == 60) return ret; // leap second
-
-    if(h < 0 || h > 23) return -1;
-    if(m < 0 || m > 59) return -1;
-    if(s < 0 || s > 59) return -1;
-
-    return ret;
-}
-
-
-
 /* parse_time()
  *
- *  Parses an ISO-8601 date/time. We support any of the ISO-8601 formats.
+ *  Parses an ISO-8601 date/time. We support any of the ISO-8601 formats. Uses libiso8601. On error,
+ *  returns (time_t)-1.
  */
 time_t parse_time(const char* str)
 {
-    const char* p, * tz;
+    struct iso8601_date iso;
     time_t t;
-    int s;
-
-    // parse the date portion
-    p = strchr(str, 'T');
-    t = p ? parse_time_date(str, p) : parse_time_date(str, str + strlen(str));
-    if(t == (time_t)-1) return -1;
-
-    // parse the time portion
-    if(p) {
-        ++p;
-        tz = strchr(p, 'Z');
-        if(tz) {
-            if(tz[1]) return -1;
-        } else {
-            tz = strchr(p, '+');
-            if(!tz) tz = strchr(p, '-');
-            if(!tz) tz = p + strlen(p);
-        }
-        s = parse_time_time(p, tz);
-        if(s == -1) return -1;
-        t += s;
-
-        p = tz + 1;
-        switch(*tz) {
-        case '+':
-            s = parse_time_time(p, p + strlen(p));
-            if(s == -1) return -1;
-            t -= s;
-            break;
-
-        case '-':
-            s = parse_time_time(p, p + strlen(p));
-            if(s == -1) return -1;
-            t += s;
-            break;
-        }
-    }
 
+    if(iso8601_parse(str, &iso, 0, 0)) return (time_t)-1;
+    iso8601_to_time_t(&t, &iso);
     return t;
 }
 
diff --git a/version b/version
index 161e213..cf11b33 100644
--- a/version
+++ b/version
@@ -11,8 +11,8 @@
 # expected to be in 'major.minor.micro' format. It can optionally be 
 # suffixed with a string.
 VERMAJOR=1
-VERMINOR=0
-VERMICRO=1
+VERMINOR=1
+VERMICRO=0
 VEREXTRA=""
 
 # kate: replace-trailing-space-save true; space-indent true; tab-width 4;