Reputation Calculator
Calculates how long it will take to reach a certain reputation tier. Enter your current tier and percent and desired tier and percent. Then enter how often you get reputation and how much reputation you're getting. This calculator is mostly intended for farming bosses with mostly predictable reputation rates.
1000 / 50000 rep
17 hours, 50 seconds remaining
Reference
To get a more realistic estimate, remember to add some extra time for time fighting, deaths, map resets, etc.
M'ogresh spawns every 2.333 minutes and gives 120 Gaekatla reputation.