[FIG(quote)[
[FIGCAPTION[
[1] [CITE[DataTypes (ZigBee 2.0 API)]]
([TIME[2014-01-09 22:06:38 +09:00]])
<http://dz.prosyst.com/pdoc/mBS_SH_SDK_7.4.1/modules/zigbee/api/com/prosyst/mbs/services/zigbee/datatype/DataTypes.html>
]FIGCAPTION]

> ZigBee UTC time - passed seconds since 1st Jan 2000.

]FIG]


[FIG(quote)[
[FIGCAPTION[
[2] [CITE[python - Conversion from UNIX time to timestamp starting in January 1, 2000 - Stack Overflow]]
([TIME[2017-05-11 02:07:46 +09:00]])
<http://stackoverflow.com/questions/35763357/conversion-from-unix-time-to-timestamp-starting-in-january-1-2000>
]FIGCAPTION]

>  I found the following datatype entry in their documentation:
> 1.3.2.7 Absolute time
> This is an unsigned 32-bit integer representation for absolute time. Absolute time is measured in seconds from midnight, 1st January 2000.

]FIG]