dnssec-settime: invalid argument --
Usage:
    dnssec-settime [options] keyfile

Version: 9.20.30
General options:
    -E engine:          specify OpenSSL engine
    -f:                 force update of old-style keys
    -K directory:       set key file location
    -L ttl:             set default key TTL
    -v level:           set level of verbosity
    -V:                 print version information
    -h:                 help
Timing options:
    -P date/[+-]offset/none: set/unset key publication date
    -P ds date/[+-]offset/none: set/unset DS publication date
    -P sync date/[+-]offset/none: set/unset CDS and CDNSKEY publication date
    -A date/[+-]offset/none: set/unset key activation date
    -R date/[+-]offset/none: set/unset key revocation date
    -I date/[+-]offset/none: set/unset key inactivation date
    -D date/[+-]offset/none: set/unset key deletion date
    -D ds date/[+-]offset/none: set/unset DS deletion date
    -D sync date/[+-]offset/none: set/unset CDS and CDNSKEY deletion date
    -S <key>: generate a successor to an existing key
    -i <interval>: prepublication interval for successor key (default: 30 days)
Key state options:
    -s: update key state file (default no)
    -g state: set the goal state for this key
    -d state date/[+-]offset: set the DS state
    -k state date/[+-]offset: set the DNSKEY state
    -r state date/[+-]offset: set the RRSIG (KSK) state
    -z state date/[+-]offset: set the RRSIG (ZSK) state
Printing options:
    -p C/P/Psync/A/R/I/D/Dsync/all: print a particular time value or values
    -u:                 print times in unix epoch format
Output:
     K<name>+<alg>+<new id>.key, K<name>+<alg>+<new id>.private