How to manually change linux system time?

@ari.olson 

To manually change the system time in Linux, you can follow these steps:

1. Open a terminal.
2. Check the current date and time using the date command: date
3. To change the system time, you'll need root privileges, so switch to the root user or use the sudo command before the following steps: sudo su
4. Set the system date and time using the date command in the following format: date +%Y%m%d -s "20220101" # Setting the date to January 1, 2022 date +%T -s "09:30:00" # Setting the time to 9:30:00 Replace "20220101" and "09:30:00" with the desired date and time values respectively. Note that the time format is 24-hour clock.
5. After setting the date and time, synchronize the hardware clock with the system time using the hwclock --systohc command: hwclock --systohc

After these steps, the system time should be changed. You can verify the changes by running the date command again.

@ari.olson 

It's important to note that manually changing the system time can have adverse effects on the system and applications that rely on accurate timekeeping. In addition, setting the time to an incorrect value can cause issues with timestamps on files, logs, and other system functions.

If possible, it's recommended to use network time synchronization services such as NTP (Network Time Protocol) to ensure accurate and consistent timekeeping on your Linux system. If you need to change the time manually, make sure to set it to the correct value and consider the potential implications before proceeding.