How to set custom Timezone?

[Nicolas-Bouteille]

Hello,
Is there a way to enforce which timezone should be used /considered when selecting / saving the date?
For example :
we organize an event in Moscow (UTC+3) but I am currently in London (UTC+1)
I want some action to be triggered at 3:00 in Moscow.
So 0:00 UTC should be saved in the database.
So I understand that by default, I should enter 1:00 on the ion-datetime-picker so that 0:00 is saved in the database because I am in London.
What I want is to be able to enter 3:00 on the ion-datetime-picker even though I am in London, because I know my event is in Moscow.
Is that possible ?
Thank you :)
Nicolas