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Seconds in a minute	60		math-time
Minutes in an hour	60		math-time
Seconds in an hour	3,600		math-time
Hours in a day	24		math-time
Minutes in a day	1,440		math-time
Seconds in a day	86,400		math-time
Days in a week	7		math-time
Days in a year	365		math-time
Days in a leap year	366		math-time
Weeks in a year	52 (plus 1 or 2 days)		math-time
Months in a year	12		math-time
Years in a decade	10		math-time
Years in a century	100		math-time
Years in a millennium	1,000		math-time
Months with 31 days	January, March, May, July, August, October, December		math-time
Months with 30 days	April, June, September, November		math-time
Days in February	28, or 29 in a leap year		math-time
Knuckle trick for month lengths	Knuckles are 31-day months, valleys between are shorter months		math-time
Leap year rule	Every 4 years, except century years not divisible by 400		math-time
Is 2000 a leap year?	Yes		math-time
Is 1900 a leap year?	No		math-time
Is 2028 a leap year?	Yes		math-time
Is 2026 a leap year?	No		math-time
Order of the days of the week	Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday		math-time
Order of the months	January through December		math-time
Seasons in order (northern hemisphere)	Winter, spring, summer, fall		math-time
Quarter past 3	3:15		math-time
Half past 7	7:30		math-time
Quarter to 9	8:45		math-time
Ten minutes to 6	5:50		math-time
Meaning of a.m.	From midnight to just before noon		math-time
Meaning of p.m.	From noon to just before midnight		math-time
12:00 a.m. is	Midnight		math-time
12:00 p.m. is	Noon		math-time
3:00 p.m. in 24-hour time	15:00		math-time
18:30 in 12-hour time	6:30 p.m.		math-time
00:00 in 12-hour time	12:00 a.m. (midnight)		math-time
Elapsed time from 2:15 to 4:45	2 hours 30 minutes		math-time
Elapsed time from 9:40 a.m. to 11:10 a.m.	1 hour 30 minutes		math-time
Time 45 minutes after 3:30	4:15		math-time
Time 2 hours before 1:00 p.m.	11:00 a.m.		math-time
Minutes in 2 and a half hours	150		math-time
Hours in 3 days	72		math-time
Hours in a week	168		math-time
Minutes in a quarter hour	15		math-time
Convert 90 minutes to hours	1.5 hours		math-time
Convert 2 hours to seconds	7,200		math-time
Convert 3 weeks to days	21		math-time
Convert 18 months to years	1.5 years		math-time
Fortnight	Two weeks (14 days)		math-time
Biweekly	Every two weeks		math-time
Semester	Half of a school year		math-time
Which hand moves faster, hour or minute?	Minute hand		math-time
How far does the minute hand move in 5 minutes?	From one number to the next (30 degrees)		math-time
Degrees the minute hand turns in an hour	360		math-time
Time zone	A region that shares the same standard time		math-time
Number of time zones in the contiguous US	Four: Eastern, Central, Mountain, Pacific		math-time
Greenwich Mean Time (GMT)	Time at the 0 degree longitude line through Greenwich, England		math-time
Calendar year starts and ends	January 1 to December 31		math-time
BCE and CE	Before Common Era and Common Era, used to number years		math-time
Digital vs. analog clock	Digital shows numbers; analog uses hands on a dial		math-time