Time Zone Changes and Planning Accordingly for Day/Night Travel
The time zone for Thailand is UTC +7.  Time differences must be planned ahead of time, especially if the medical treatment is extensive.  Bangkok is 12 hours away from New York, 9 hours from California but 5 hours the other way from Berlin. 
Please plan accordingly with adjustment for jet-lag and time changes.
The local climate in Thailand is tropical, with 3 weather seasons and 2 traveling seasons: 
Weather Seasons

Summer: March – May

The weather is hot and dry with temperatures ranging between 82-91°F (28-33°C).

Rainy Season : June – October

There are rainfalls throughout the country with temperatures ranging between 80-86°F (27-30°C).

Winter: November – February

The weather is cold with good sunlight and temperatures ranging between 75-80°F (24-27°C).

thai weather

Traveling Seasons

Highest Peak Season : November- April

This is considered the 'winter' of Thailand, where temperatures are in the 80 degree range. Many medical tourists choose this peak season to travel to Thailand as the weather conditions have been noted to be as close to perfect as possible on Earth. 

Off-Peak Travel Season : May-October

The volume of tourists is lower in the off-peak seasons from May to October.  This is the rainy and/or hotter season of Thailand and may be the perfect option for you if you are traveling to Thailand for an emergency medical procedure only.