[1] [CITE[Man page of GETTIMEOFDAY]]
([TIME[2019-04-14 12:33:29 +09:00]])
<https://linuxjm.osdn.jp/html/LDP_man-pages/man2/gettimeofday.2.html>

[2] [CITE['''['''tz''']''' Java & Rearguard]]
([TIME[2019-06-04 05:20:03 +09:00]])
<https://mm.icann.org/pipermail/tz/2019-June/028048.html>

[3] [CITE['''['''tz''']''' Java & Rearguard]]
([TIME[2019-06-04 06:45:54 +09:00]])
<https://mm.icann.org/pipermail/tz/2019-June/028049.html>

[4] [CITE['''['''tz''']''' Java & Rearguard]]
([TIME[2019-06-04 09:24:22 +09:00]])
<https://mm.icann.org/pipermail/tz/2019-June/028052.html>