A mod that randomizes month, day, and time you spawn at. Or set each to a custom value. Every one is configgable. So you can randomize only the month, only the hour, etc.
For context the default vanilla setting is May 1st at 8 am.


{
"RandomizeMonth": true, // Set False to pick a specific month.
"FixedMonth": 1,
"RandomizeDay": true,  // Set False to pick a specific day.
"FixedDay": 1,
"RandomizeHour": true, // Set False to pick a specific hour.
"FixedHour": 15        // Use 24 hour format.
}

This mod only works (once) at world creation. Because you have to run the mod once to gen the config, make any world, leave, set the config, then make the 'real world.'

Want even more random spawning? Try a random location.

Here's some of the 'making of' for the icon because why not.