(bÄt) n. 1. An agreement usually between two parties that the one who has made an incorrect prediction about an uncertain outcome will forfeit something stipulated to the other; a wager: made a bet that it would stop raining before 2:00. 2. An amount or object risked in a wager; a stake: a bet of $50.
1 billion seconds is a significant birthday or anniversary, being about 4 months shy of 32 years. 1 billion seconds is 31 years, 251 days, 13 hours, 34 minutes, 54.7843 seconds. But note that these are 365-day years, so you have to adjust for leap years. Remember, a leap year adds 1 day at the end of February on years that are divisible by 4, unless they're also divisble by 100, except when it's also divisible by 400.
(1012 sec)/(3.16 x 107 sec/yr) = 31,546 years! Six trillion seconds equals 189,276 years. Now, as an aside, along with the nearly six trillion miles in the light-year, you might be interested to know that there are nearly five trillion dollars in the current U.S. national debt.