touch: got to be owner if use date string

[Dan_Jacobson at ATT.COM]

spotted on Amdahl UTS 5.2.6....

$ ls -l lcircle10.300pk
-rw-rw-rw-   1 dvorak   dvorak      4340 Feb 12 07:51 lcircle10.300pk
$ id
uid=47941(danj1) gid=47941(danj1) fsid=8(45262)
$ touch lcircle10.300pk
#that worked, why not this?  works when I'm owner...
$ touch 1231235999 lcircle10.300pk
touch: cannot change times on lcircle10.300pk
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Dan_Jacobson at ATT.COM  Naperville IL USA  +1 708-979-6364