Add solar and lunar date

[herotux]

A large percentage of the world's population does not use the Gregorian date, but follows the solar or lunar date, this is very important and practical for us, consider this feature if possible.

[tibbi]

that isnt really on the roadmap in this app

[herotux]

Ok but i do that

[herotux]

Done! Are you accept pull request?

[tibbi]

some yes, but it isnt needed for this task

[herotux]

So we will not see the solar date in this application, right?

[tibbi]

right, that wont be added