Is there a max on the Serial Number?

[Lists User]

If the serial number in the SOA entry is over 10 digits it gives me the
following error in rndc when I try to so a reload.

For example: 2001020223 will work, but 20010202231 will not.
It gives me the following error:

dns_rdata_fromtext: db.domainname.com:2: near '10800': out of range

Can't you have:
<Year><Month><Day><hour><minute> anymore?

Thanks for any help,
-Steve