bug#20962: guix download error "Bad Date header"

[m8r-y0v7u9]

Hi,

guix download doesn't seem to like date headers that don't use GMT / UTC.  
#guix irc logs from 2013-10-16 mention something similar.  Any suggestions or 
work-arounds?

Below is some relevant output -- first with guix download, then with wget -S 
(note the Expires header):

$ guix download \
https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip
starting download of `/tmp/guix-file.o8FJB9' from 
`https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip'...
ERROR: Bad Date header: Fri, 03 Jul 2015 01:39:41 PDT

failed to download "/tmp/guix-file.o8FJB9" from 
"https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip";
guix download: error: 
https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip: 
download failed

$ wget -S 
https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip
--2015-07-02 16:49:11--  
https://dl-ssl.google.com/android/repository/platform-tools_r22-linux.zip
Resolving dl-ssl.google.com (dl-ssl.google.com)... 173.194.72.91, 
173.194.72.136, 173.194.72.190, ...
Connecting to dl-ssl.google.com (dl-ssl.google.com)|173.194.72.91|:443... 
connected.
HTTP request sent, awaiting response... 
  HTTP/1.1 200 OK
  Accept-Ranges: bytes
  Content-Length: 1751911
  Content-Type: application/zip
  Etag: "50c5a"
  Expires: Fri, 03 Jul 2015 00:49:11 PDT
  Last-Modified: Tue, 10 Mar 2015 17:00:00 GMT
  Server: downloads
  X-Content-Type-Options: nosniff
  X-Frame-Options: SAMEORIGIN
  X-Xss-Protection: 1; mode=block
  Date: Thu, 02 Jul 2015 07:49:11 GMT
  Alternate-Protocol: 443:quic,p=1
Length: 1751911 (1.7M) [application/zip]
Saving to: ‘platform-tools_r22-linux.zip’

platform-tools_r22- 100%[=====================>]   1.67M  2.35MB/s   in 0.7s   

2015-07-02 16:49:12 (2.35 MB/s) - ‘platform-tools_r22-linux.zip’ saved 
[1751911/1751911]