You should apply as early as possible. It makes it possible to raise enough money to cover your expenses for your trip, enough room to plan and pack and prepare if you apply much earlier. We suggest you start planning 18-12months ahead of time. However, we are able to process applications on short notice, but that may not give room for us to plan a fundraising with you to cover your trip expenses. You will need a passport which is at least 6 months valid past your trip start date. You will need a visa which takes about two to three weeks to be issued, you will need some inoculations. So depending on what you have currently, the time limit may differ from person to person.