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Date: Wed, 19 Apr 2017 14:03:18 +0000
From: Steve Coffman <>
To: "" <>
Subject: strptime.c missing timezone z case

I noticed that musl does not support timezone formats that include %z or %Z for timezone, unlike glibc.
Both %d/%b/%Y:%H:%M:%S %z and %d/%b/%Y:%H:%M:%S %Z for instance. 

When I change the timeformat to %d/%b/%Y:%H:%M:%S +0000 it works fine. Since we always use UTC, this works around the problem for us, but will affect any Alpine linux (docker) users that don't.
Looking through the musl source code to strptime.c <> and strftime.c <> I see that while strftime.c has a z case, strptime.c does not. My C is weak so that's about all I can suss out. Not sure if that's at all helpful.

More details of my investigation are here:

For comparison, glibc handles it this way:

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