time: time.Local doesn't match the timezone reported from Java on android

[eliasnaur]

Java and Go should have matching default timezones.

log.Println("local: ", time.Local)

prints

local: UTC

while

Log.i(TAG, "java timezone: " + java.util.TimeZone.getDefault());

prints

java timezone: libcore.util.ZoneInfo[id="Pacific/Midway",mRawOffset=-39600000,mEarliestRawOffset=-39600000,mUseDst=false,mDstSavings=3600000,transitions=4]

[hyangah]

It seems we need to look for the zoneinfo timezone db and index files in other directories on android. e.g. /system/usr/share/zoneinfo?

[ianlancetaylor]

@hyangah you may also have a zoneinfo problem, but the problem with time.Local is most likely different. If the TZ environment variable is not set, the time package loads /etc/localtime. On conventional Unix systems that is a copy of the zoneinfo data for the local timezone. On Android that file may be somewhere else, or it may not exist.

See initLocal in time/zoneinfo_unix.go.

[rakyll]

On Android, there is no /etc/localtime. The contents of /system/usr/share/zoneinfo is not similar to the other unixes, and TZ env var is not set.

All I was able to do was getprop persist.sys.timezone.

[gopherbot]

CL https://golang.org/cl/10299 mentions this issue.