Generally (under "normal conditions") considered to be:
- 186,000 miles per second
- 11,160,000 miles per minute
- 669,600,000 miles per hour
- 16,070,400,000 miles per day
- 482,112,000,000 miles per month
- 5,865,696,000,000 miles per year (a light year!)
- 586,569,600,000,000 miles per century
- 297,600 kilometers per second
- 17,856,000 kilometers per minute
- 1,071,360,000 kilometers per hour
- 25,712,640,000 kilometers per day
- 179,988,480,000 kilometers per week
- 9,359,400,960,000 kilometers per year
- 9,359,400,960,000,000 kilometers per millennium
- 327,360,000, yards per second
- 19,641,600,000 yards per minute
- 1,178,496,000,000 yards per hour
- 28,283,904,000,000 yards per day
- 10,323,624,960,000,000 yards per year
- 10,351,908,864,000,000 yards per leap year
- 103,236,249,600,000,000 yards per decade
- 982,080,000 feet per second
- 58,924,800,000 feet per minute
- 3,535,488,000,000 feet per hour
- 84,851,712,000,000 feet per day
- 30,970,874,880,000,000 feet per year
- 11,784,960,000 inches per second
- 707,097,600,000 inches per minute
- 42,425,856,000,000 inches per hour
- 1,018,220,544,000,000 inches per day
- 7,127,543,808,000,000 inches per week
- 31,564,836,864,000,000 inches per month
- 371650498560000,000 inches per year
- 372,668,719,104,000,000 inches per leap year
- 3,716,504,985,600,000,000 inches per decade
- 37,165,049,856,000,000,000 inches per century
- 371,650,498,560,000,000,000 inches per millennium
and one foot per nanosecond! (thanks Ed Halley)