feat: create fix-wsl-time.md

cheatsheets/shell/fix-wsl-time.md

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+# Fix WSL time
+
+I had an issue where the WSL date and time was out by about a day, while the Windows host was fine.
+
+Check the value is correct with:
+
+```console
+> date
+Mon Oct 30 22:24:21 CET 2023
+```
+
+
+## HW Clock
+
+I found this on Rix AI tool and it worked for me:
+
+```sh
+$ sudo hwclock -s
+```
+
+
+## NTP
+
+Install ntpdate:
+
+```sh
+sudo apt install ntpdate
+```
+
+
+Then run to sync with a public NTP server
+
+```sh
+sudo ntpdate pool.ntp.org
+```
+
+Or add a cron job to sync periodically:
+
+```
+* * * * * sudo ntpdate pool.ntp.org
+```
+
+Alternatively, based on GitHub:
+
+```sh
+sudo ntpdate time.windows.com
+sudo service hwclock.sh reload
+```
+
+
+## Restart WSL
+
+```sh
+wsl --shutdown
+wsl
+```
+
+
+## GitHub issue
+
+The datetime going out of sync was reported in 2020 - [#5324](https://github.com/microsoft/WSL/issues/5324).
+
+Here is a comment in 2023:
+
+
+> For those who are still struggling in October 2023, doing both of the following will solve the problem and save you from manually syncing every time.
+>
+> - [Set up Windows Task Scheduler - schtasks](https://stackoverflow.com/a/65086857)
+> - [Set up systemd-timesyncd](https://github.com/microsoft/WSL/issues/8204#issuecomment-1338334154)
+>
+> But I agree it is still a bug.