Hello,
You can try below from cli
acc-2(config)# time ? <--Options available
begin-date The date when daylight savings time begins.
MM/DD[/[YY]YY] The new date
daylight-time-rule The daylight savings time rule for your location
end-date The date when daylight savings time ends.
HH:MM[:SS] The new time
timezone The number of minutes your location is West(-) or
East(+) of GMT
acc-2(config)# time 03/18/2021 14:15:0 <--Changing the time
Thu Mar 18 14:15:00 2021
acc-2(config)# show time
Thu Mar 18 14:15:04 2021
acc-2(config)#
acc-2(config)# ip default-gateway ?
IP-ADDR IPv4 address of the default gateway.
acc-2(config)# ip default-gateway <gateway IP> <--Changing default gateway
Thanks!