I'm looking at this question and I'm trying to understand the procedure for a tourist visa for Oman. While my question is similar it's a bit different.
I will have a 20 hour layover in January (the 14th, 2020) coming from Nepal. The statement made in the above question is:
Visa must be used for entry to Oman within 1 month of approval.
So, do I need to wait until 1 month (Dec 14th) before I enter Oman to apply as approval can take a few days to a few weeks? I don't see an option during the application process to enter the date of arrival.