The Sun - Upright
Radiant energy fills you completely. Each dawn brings full restoration of health, hunger, and saturation, plus Regeneration II and Strength for 1 minute. Daylight provides passive healing (0.5 hearts every 3 seconds). The sun's blessing is absolute.
The Sun - Reversed
The sun scorches mercilessly. Under open sky during daytime, you accumulate sun exposure that deals 2 hearts of damage per second when the meter fills. Like vampires, you burn in sunlight. Shadows become sanctuary.