Run Syphoner for MacOS by changing date before and after launching. Inspired by https://github.com/arunyagoojar/RunAsDate-for-MacOS/tree/main Syphoner can be downloaded here: https://www.sigmasix.ch/syphoner/

readme.md

Setup for macOS shortcuts

1. open shorcuts.app
2. New shortcut
3. Set type to run shell script (search from the box at the right)
4. (Note: need to manually enable shell actions through preferences... click the button, click advanced, and tick the first checkbox then closee that little pop up then you should be good)
5. Copy/paste the script
6. Make sure shell is set to bash, and check run as administrator

syphoner_date_change.bash

#!/bin/bash

sudo systemsetup -setusingnetworktime off

# Change date to a specific date
sudo date 1001110022

# Wait for 3 seconds
sleep 3

# Launch Syphoner
open /Applications/Syphoner.app

# Wait for 3 seconds
sleep 3

# Change date back to current date
sudo systemsetup -setusingnetworktime on